You'll get it figured out! I vote get it running with a cheap gen 3, then step up from there. You're only ~$2000 from a forged motor with the block and heads you have.
Cam is 500, lifters the same and valves and springs add up to over a grand. Ill get it done this summer I hope but only my economics needs to return or its over for anything at this point but roller skates. Lol