Should I leave it Stock?

Also how much stuff has to come out to put the cam in (in front of the engine)... radiator? I am having water pump replaced shortly. Should I just wait on the water pump until the cam? (I do not think it needs a water pump yet but I won’t hurt to do it.)

I’d go cam to some 250 .450 ish cam either 110 or 112 since your gonna have it half apart, I’m sure a few will disagree.