360 la build
Nice build list.
I myself would not advance the cam. IMO you’ll gain very little.
A good carb is one you understand and can work on easy. I suggest a 750 in the future.
You should be good with 91 octane but I’d like to know the gasket thickness and bore size. I can not recall these specs on the 1008. If you were head gasket less, I’d recommend a gasket not a .001 thicker than a .045.
.005 + .045 = .050. That is the max recommended distance for having any quench.