Help on 408 build

I'd run tight quench with the new heads, you can open them up around the valves for 5cc
I'd think solid cam and ask Mike Jones to run the numbers 4 U once you get the CR figured out- fill out his cam request card online
have your head flows handy he can make it work and advice on the resulting torque curve which may or may not be acceptable given converter and gears
do start the tune up conservatively