cylinder pressure and dynamic compression with different camshafts`

this is an engine i'm in process of building currently. It will be in a 4x4 ramcharger. But i have ported x heads, performer rpm airgap intake, fitech efi, headman headers. the cooling system will be top notch. so im just trying to figure out the compression and all before i put this engine together i have yet to get pistons or head gaskets