If running higher compression zero decking for a tighter quench area and smoothing all sharp corners is a good idea. However, you want a cam with a later intake valve closing as that's when the cylinder begins to seal. I would ultimatley pick a cam that gives me the dynamic compression I want for the intended use. Measure everything and use a dynamic compression calculator otherwise stay in the mid to low nines for your static compression. I'd recommend degreeing the cam installation regardless.