Max-out Vargas' value at 3B. Hes been unexpectedly great there regardless.
Meidroth has been fine at SS but I believe he's publicly said he prefers 2B and thats where his future is anyways. It's good he can play both though.
Baldwin's best value will be to play 6 positions, even if poorly, and spell anyone as needed. Should be plenty of ABs.
Play Colson at SS until its clear he's not that.
Sosa will have to play 1B and spell 2B when he can but his development takes backseat to Varhas, Colson and Chase.