I would say, do it now and get a "real" amp. A good tube amp with some ba))s and a twelve inch speaker.
You can go as low as a Marshall DSL15c combo. It has a twelve inch speaker and is 599. A DSL40c combo sounds better to my ear and has a twelve inch speaker. These are good amps with all tube design and digital reverbs.
You can get a Peavey Classic 30 or Delta Blues for 649. The 30 has a twelve inch speaker and the Delta has a fifteen inch speaker, ordinarily. These are USA made Peaveys and are dependable, will be fixable long into the future and are really loud, but can be played softly, like the Marshall DSL's.
A Fender Hot Rod Deluxe has a twelve inch speaker and is loud but can't be played very quietly. They are around 729 and forty watts like the DSL40c, but the DSL has a lot more versatility and tone shaping and can be turned down and even has a switch to power it down to 20 watts.
The Fender Blues Jr. is only a one channel amp. All the other amps I mentioned above are channel switching two cannel amps - clean and overdrive. The BJr. is about 599 and is a good amp but doesn't have an overdrive channel. Having an overdrive channel is good if you like to play certain sounds like are often found in blues and rock, and overdrive pedals normally add noise to the sound you get from the amp when you stop playing - hiss, hum, whatever you call it.
The Peavey Classic 30 and Delta Blues are made in the USA by Hartley Peavey in Mississippi, if that means anything to you. It means something to me. It seems that the USA made amps are dependable and fixable. Two things I value. The Mexican made Fenders though, should be equally durable and fixable in most cases. I think there is a very close connection to Fender in California and Fender in Mexico so that communication is excellent and quality control is maintained.
These companies that make amps in China or other Asian or Malasian/Indonesian countries do not have that close connection I don't think. Language is often a major impediment to getting a product produced the way the designers imagined it. The off shore manufacturers making the amps for the big name amp companies like Marshall, Blackstar, etc., are allowed to source their parts from where ever they want. This often results in it being "impossible" to find replacement parts farther down the road in time when your amp might break. Usually the USA made stuff will have parts available or know how to get them, unlike the off shore mfg's. To the Asians, etc., it is a "contract" to build something - build it and move on to the next thing from who ever the next manufacturer is.
I have quite a few off shore amps and I have had some go bad on me where they could not be fixed - impossible. No parts available and the replacement parts could not be hand made by the professional amp dudes I had working on them under warranty. I still have some, like two DSL's the 40c and the 100h head. These Marshalls are not made in England and I personally think that means something.
I have four or five American made amps and they are good amps. But to get a super screaming zonker amp like the Marshall DSL100h head that is made in England you are going to have to pay about three times as much, or there about. So some of us get off shore made amps or Mexican made Fenders.
I would say stick to the well established big name amps like Fender and Marshall, etc., and get a good all tube amp, even if it is made off shore. These companies stand for something other than the name on the name plate or headstock, believe me. Others will debate this. Dependability and fixability are two main things I look for in an amp.
I had an Egnater Tweaker an it blew up on me. I could have had it fixed but it really didn't impress me that much once I took the chassis out and looked at it; so I got a Peavey 6505+ after I returned it for a credit and paid 150 more for the super high gain, super loud Peavey. I personally would not get that as my first amp. But the day is going to come when you want a loud amp, so having the extra power is a good thing.
If you are only going to have one amp I would get one with at least thirty watts of all tube power. It is important to get a substantial amount of power so that you can get some "clean headroom" on the clean channel. Clean headroom means that you can turn the volume of the amp up to "loud" without the sound changing from sparkly clear and clean to distorted or dull, muddy sounding. You don't have to crank a powerful amp all the way up, but when you turn one up to the desired volume it won't be distorted and dull sounding - it will be clear and sparkly like at the lower volumes. This is actually a big deal and something to consider. Those little five watt amps mostly get very distorted sounding, in not a good sense, when you turn them up all the way. I have some.
Not everything is etched in stone though. I have a Fender Deluxe Reverb twenty two watt combo amp that stays very clean at a very loud volume. That is a characteristic of Fender amps traditionally. Loud and clean. These are tube amps I'm talking about, not the Mustangs, although some people like those digital, computerized, amps with the built in amp modeling/effects pedals.
Since the digitalized, computer type amps have not been perfected, most serious professionals use "all tube" design amps. They may get digital or analog multi-effects pedals to play thru them, but they usually get the classic tube design amps.
I would not get too small of an amp for my first amp. Get something at least 15 - 30 all tube watts I would suggest. Some of these will have switches to cut the power in half or even a knob to turn it down incrementally.
I'd say, make the most out of your money and don't buy some one else's problems. Get a good tube amp that does your guitar justice. Some say that it is wise to allow for spending and approximately equal amount on your amp as you do for your guitar, in order to do the guitar justice. It is just a rule of thumb, nothing cast in stone. You might be able to find some super excellent deals out there if you start doing the footwork and trying to talk some of these salesmen down, etc.
Others will differ in their opinions, obviously, but I advise getting a "real amp" and being done with it, at least for now.
Good luck.
