The only FA we might have a shot at is Nash. But even with that being said, I think he'll either re-up in Phoenix or sign on to play with his BFF in Dallas. We should be saving cap space for next year's FA group.
The time to spend money is this summer if free agency is a big part of the master plan.
Any cap space next year will be spent on re-signing DD (or letting him walk for nothing) and JJ (or letting him walk for nothing) first.