It's tempting for sure. The head shave should raise compression somewhere above 10:1, an 0.020" shave nets about half a point standard bore/deck etc from memory, so an 0.60" shave a point and a half? The spare head is being cleaned up for an all out build in the future...
11 or 12:1 compression and an 8 grand redline with full balance job, all that, is very tempting.
Stop giving me ideas