I would not rout the 305 as the level of expertise required to pull that off and the cost involved would be cost prohibitive. Unless you go the full Hans route and get top tier talent doing the work, You will end up spending $$$ while devaluing the guitar...all the while not being sure if you will like the end result. I know we like to tinker, but just be sure you know the cost up front.
I would look into Buying a PRS Brent Mason. You'll will get the position 2 and 4 sounds and the hot bridge humbucker when you want it.
I've built a few guitars from bare wood in the past so I would do it myself. I have the tools and I would build some kind of home made jig for the router.
Yes the value will off course drop, but then again it already did as soon as walked out of the store. So I know I'll never get my $$$ back if I would trade for another guitar.
The Brent Mason again has the 5-way switch in the wrong possition. I could order a custom pick guard to sort that out. But I think all PRS's looks better without a pick guard (no disrespect)

Well,well... There are clearly more of you guys that think this is a dumb idea so I might just shut up and play the guitar instead

Thanks for all the comments though...