Did you get the frame welded? I skimmed through the post but didn't see where it was repaired.
If you're on a budget, you're better off to build a reliable stocker. Don't worry with porting until you have the money to get the other supporting modifications.
Walker's autoparts will do a good bore job once you have a piston if your top end needs boring. I had my prairie 400 bored by them and it turned out great.
I have a cache of the tools necessary to do the bottom end work if you need them. I'm over in Butner, not that far from you. If you have a new crank and the top end off, we could have the bottom end apart and back together waiting on the tope end in one saturday afternoon. Let me know.
Oh and if you need a drum and backer plate assembly, I'll sell you one CHEAP. I upgraded to norman420 spindles so I have a pair sitting out in the garage.