I see the starters at the begining of the season as:
Williams
CJ
AK
Millsap
Jefferson
This lineup can give other teams guards fits as far as matchups go. Dwill is big, CJ at the 2 is big and an outside threat. Ak is long and a good defender also good passer. The problem will be with Millsap and Jefferson we will be small at the 4/5 spot. Not as bad as last year with booz and sap, but still.
As for who they pick up, the jazz need big bodies. Fes and evens (both on the cheap). Gains is iffy. It will depend on who they can find. A rookie or Dleaguer will cost less and they still have price under contract to play backup. So if you can save at the 3rd string and get as good if not better, then that is the way to go. The Jazz could use another wing player. Brewer would be good, but unlikely (money again)