Re-signing your own FAs occurs at the same time as re-hiring coaches, so don't forget about that. Looking at your roster, one of your top priorities should be re-signing Sterling Riley. He is a raker, and still in his prime. However, he should begin his decline soon (maybe even starting this season) so I wouldn't sign him to a very long contract, unless he specifically asks for it. If you could get him signed for three years, I think that would be pretty good.
Your AAA team has way too many pitchers and not enough position players. But that might be a getting a little ahead. This game is a little overwhelming at first.