I would concentrate on your ratings one at a time. Objective is no failures and minimum cost. This increases you chance of (I) getting to your preferred airline and (II) surviving on the first few yrs pay as CFI, pipeline, FO or whatever.

Once you have gotten a job that will get you to 1500 start educating yourself on not only regionals but alternate routes. Know all of their interview minimums, hrs etc. when you are within a few hundred hours of that polish up the resume, see who is still standing, read the gouges and apply, apply apply. Then interview, interview, interview.

Once you get offers only then can you choose where you want to work. Remember you may have to work somewhere that is not your first option. So know them all, pros and cons etc. try to make the most informed decision you can. No one has a crystal ball.

Welcome to the career.