This is definitely a pmUS 321, not a 321T. pmUS 321s never had MCE specifically installed, but AA has started coded all exit and bulkhead seats as MCE.
The bulkhead (Row 5) is, I believe, a hard bulkhead that may restrict leg movement.
10F, 23A, and 23F each of a lot of legroom due to the lack of a seat in front of them. I believe 10A/B/C have a lot of legroom too, but our pmUS folks will need to confirm as I have somewhat limited pmUS 321 experience. I believe 22 B/C/D/E also have some extra legroom, but again need confirmation.
ETA: seatguru (I can't vouch for accuracy) indicates the Row 22 seats are quite a bit narrower.