360 with Nitrous?

I was thinking 50. But since im building up the engine regardless maybe its wise to spend the extra cash and time now instead of later down the road. Ive rebuilt stock engines. With stock parts. Never anything custom or slightly in that direction. Where is a good source or outlet to see what parts go best with what, and what to expect.

If you had a clean slate on this 360 what would you do. Mild and Cost Effective AKA CHEAP ...lol