You'd be a BIG light heavy. I agree on the Masters thing, at 43 I'm right on the cusp, big shows there's an over 40, little shows its 35+ & 45+. My advice would be to keep going with the cut and get some feedback from some "in person" impartial judges (or gym bros). If you're really lean,full and tight at 210lbs why give up lean mass for the number on a scale?
You look great at 220 judging by wheels and upper body shot you kept a good deal of size on this cut. Ramping it up at this point might be counter productive. Pick a show for May/June and keep chipping away slowly. Kudos man!