They won't be paying Noteboom.. so keeping AJ would just be smart. Don't overpay, of course.. and, if, somehow.. there's a good LT available in FA, maybe you don't pay him and get that guy. But good LT's rarely hit the market. AJ proved to be, at worst, a league-average starter. Don't create need at critical spots.
All of the DL guys you mention are okay as rotational guys.. but none has show the impact-play ability BB has. It's easy to forget how young he is.. and how truly special his raw gifts are. The guy has a 9.82 RAS.. it's ridiculous. He started to grow last year and I expect even more from him this year. A truly mature and fully realized version of this kid would be an absolute difference maker on the DL. We'll see if he can get there.