This is an overhead cam engine, yes? Then you don't want to shave the heads ..... unless you get adjustable cam gears and pay for the time to readjust.
If you work the heads, I'd concentrate on deshrounding and polishing the bowl side of the head .... and then just sharpening splitters, polishing the exhaust ports, and smoothing any rough transitions in the intake ports.
If you can get 40HP, I'd be willing to do this to my 07. Are the Crane cams regrinds so they would look stock if I brought my car in for warranty service? I don't want to mess up my lifetime powertrain warranty.
Since I just bought mine, what's the inside of the engine like? Are there rockers, or do the cams sit directly over the valves? Are the lifters hydraulic so we don't need to reshim for cam replacement?
I'll have the suspension fully tweaked in a couple weeks, I need somewhere else to go with my itch.