As a first year FO you will want to live on pbj and get as much per-diem on overnights as possible to make up for low pay (if you need the dough, that is). You don't get any doing Ready RSV. It can be around $500 extra in your paycheck. Oh, and crew sched will like you better (not). I know per-diem is for food and not income but you do what you have to do to get started.