360 build !help!

I see you put out some feeler's for a set of Eddy heads. You're on the right track. Heads and cam is where you'll make your power, along with a 1 3/4" primary header in my opinion.

I should address the "stock bottom end". I assumed you meant that while keeping it a "stock" low compression build, you were still going to go thru it and not just bolt parts on to a 35yr old short block???

Meaning, if all the stars align and it's in great shape.....The minimum I would personally do is...
A thorough cleaning.
A minimum deck cut to flatten them.
Cylinder hone with a Torque plate.
New cam bearings.
Polished crank.
Good main and rod bearings with proper clearance.
Recon rods with good bolts.
File fit rings.
A new stock vol/press oil pump and pickup.

A short block build like that, while not top of the line by any means, would be my minimum since you want to run the track close to 60% of the time. The savings would come from no boring, pistons or balancing. Only you can decide how far you want to go?