Firm and insurance choice for Pharmacy

For Pharmacy I’m thinking of making university of nottingham or university of Birmingham my firm choice. Uni of Nottingham wants ABB while uni of Birmingham wants AAB, but if I make it my firm choice I will need BBB.

Also, for uni of nottingham I will have to move out. With how expensive university is, I’m worried about moving out.

I’m thinking of making my firm choice on the 28th of March as that is when UON is having an offer holder day.

Any advice? Also would making my firm choice later be a bad idea?