2.02 or 2.055 valve?

The 2.02 should be plenty. Down the road at some future valve job if you need to raise the valves in their seats the 2.055's or 2.08's can be fitted.

Also, if your machinist uses a Serdi machine the seat labor should be the same regardless of profile. If the extra 50 bucks gets a back cut on the valve itself it's worth it.