My only advice is: being an online store, ask for recent photos. If this has been kept under the light for a long time, the color might have faded and the photos might have been taken years ago.
Not necessarily a bad thing, but you don't want to have surprises when you open the box.
I'm pretty sure it stays in tune well. Compared to the ones produced today, the tuners, the pickups, the finish and the p.u. switching systems are different. I can't tell what does this mean in terms of sound.
About the tuners, why are you saying that they have been modified?
As it seems that you're more attracted by the look of the SG, rather than the sound/feeling, I would suggest to think twice before buying something you want to look and not to play.
BTW, I've only played one SG in my life, the weird Zoot Suit one, and it felt great. I'm not sure if that feeling...
Don't panic. It's a treatable condition.
And I see you went straight to the high dose super-concentrated drug. I'd ask to your health insurance to cover the cost ...
Anyhow, let us know (and see/hear) when the Super Eagle arrives!
I was a bit disappointed by Yusuf/Cat Stevens, in 2014.
I have been waiting for him for 18 years, since when I discovered "Catch bull at four", at the age of 15, among my dad's CDs. I thought it would have remained a dream, going on his website many times per years, always with the same...