He seems pretty bent on using the cam, which is fine. It can be made to run really well leaving compression right where it is. The problem is, you cannot convince people of that. Yeah, it'll make more power with more compression, but I just bet it's not worth the extra money spent.
It just will not work! Call any cam mfg. and ask them. He would be much better off just using a stock 318 cam. I'll bet he could get one on here for free + shipping. You are giving the man the wrong info.