Basically it has to be worth the asking price , parts & machining would exceed that price but what is in it & do you want it ?
Speed Pro pistons means nothing , cheap cast , hyper , or forged which ios the only thing I want in my engine , I would toss the Comp cam anyway .
No info on heads at all ? What compression ratio ?
Definatly need more info , talk to the machinist , get receipts ,