Like I said before, the area is dying for a place like this. It's pretty much the case of "If you build it, they will come".
As far as games, there have already been a lot of great suggestions. I think System 11s and DMD games should make up the bulk of your lineup, but I would definitely include a handful of great early SS pins. Throw in some titles like Fathom, Centaur, Paragon, etc. and the pinheads will be beating down your doors. And don't forget about the Zacs. You have to have at least one. Farfalla would be my choice. Oh, and if you still have room in your budget for one more, I'd highly recommend a SC. Pinballer22 recently had a nice one for sale. It may still be available. He's located near Des Moines:
http://pinside.com/pinball/forum/topic/fs-or-ft-safecracker#post-160969