I'm waiting on Jim at racer brown to call me back with his recommendation, but I was kinda thinking high 230s to low 240s .550 ish lift. (Sft) Compression target is 10.8
I did a 70 318 9.8:1 comp with cleaned up 318 heads and a 230/236 and .525 (if I remember right) and it ran pretty good. I’d expect with a better head and more comp on yours, he’ll recommend the upper part of your range.