not another cam question!!

I doubt you will be able to deck that block enough to get zero deck with stock pistons without running into major problems. As rumblefish stated, you will have piston to valve clearance problems, not to mention intake fitment problems from cutting the block that much.

You need to replace the pistons with forged pistons with large valve reliefs to get it close to zero deck, then deck the block to make it exactly zero deck. Then you can start thinking about the cam.

Stock pistons and a 150 shot is a recipe for disaster. You're basically building a large grenade with the pin already pulled.