Theres not much information to give you a helpful response. Do you live in MA/NH or do you have a cross country commute to BOS? Living in base and willing to work extra you’ll probably get 100 hours/month without too much issue. It’s harder if you’re stuck on RSV though, so picking the junior airplane helps. Typically the bigger the plane the more senior it is in BOS, but things will evolve as more A220s are brought in and the opposite for the E190.