Bulkhead seat question for long haul?

I am looking at booking our flights to Zurich from PHL for next summer on AA. I am considering on paying for seats (bulkhead seats) $150 pp times 4. Since I read that the arm rest cannot be moved, do these seats end up having less width? Also, if we change out dates, will we loose the amount paid for the seats?

Attaching a pic to get some idea from expert flyers is there is another seats we should choose. Kids are 6 and 8 and usually we move the arm rest up and they can lie down on us to sleep. Can we take those inflatable footrest and use it. If not bulkhead, would the rows behind also work? It says it has more leg room, seats D, E and H in the middle.

Thoughts?

TIA

I am looking at booking our flights to Zurich from PHL for next summer on AA. I am considering on paying for seats (bulkhead seats) $150 pp times 4. Since I read that the arm rest cannot be moved, do these seats end up having less width? Also, if we change out dates, will we loose the amount paid for the seats?

Attaching a pic to get some idea from expert flyers is there is another seats we should choose. Kids are 6 and 8 and usually we move the arm rest up and they can lie down on us to sleep. Can we take those inflatable footrest and use it. If not bulkhead, would the rows behind also work? It says it has more leg room, seats D, E and H in the middle.

Thoughts?

TIA