First Build.....360

What do you think I will end up with with that?

What do you mean? Power wise? Not enuff info.

Still deciding beefed up 727 or A-500/A-518 (I live in the country)

The 518 is a big unit, look for the 500, a 904 based OD trans that has a smaller case/body.

10-1 on pump gas is doable dependent on available octane and cam size/distributor timing.