REbuild advice on parts

Hi..I am rebuilding a 360 for my '74 Scamp. The machine shop will prepare the block and heads(bore, align, hone, zero deck, balance) and I will be doing the actual build. So far I have decided on KB107 pistons and Comp cam XE268H and performer RPM intake.

My question is should i purchase a re ring kit from Summitt or Jegs or buy each of the components separately? Also, what piston rings, oil pump etc.
You guys get the idea...advice on the proper parts for a good street build. Hoping for about 375+ HP. Also, who do you think has best prices?
THANKS