383 build help one piece at a time

My take;

The 383 has to be bored .030? Then Grab a set of the KB slugs as stated above. The ratio should come in around 9.5-1. A little off in ether direction is OK.
Cam @.050 of 230.
RPM intake and a 750 CFM carb
Headers aren't cheap in your position. Save for TTI headers and exhaust.

Shift kit in the Trans and a 2800-3000 stall
3.91 gears
Multi spark ignition

Worry about the heads later. When money allows.

Have a good day and let'er rip!