Granger's not a rookie. I mean if we are talking about the guy that DID PLAY the 4 vs Garnett in the Boston win. Rush-Jones-Granger is a good combo, work Roy and Solo at the 5, have Foster help at the 4 and 5. Give Tyler minutes if you find some.Players don't lose their starting position to injury. His backup is a rookie on a limited playing time schedule.
Don't play Ford and Watson together. If you want to rotate out Ford and Rush at the same time then you can go big on the frontline for a few minutes, and now you have Dunleavy anyway. Watson-Dun as your backups work fine to spell Ford and any one of the 3 wings.
You can easily move Troy out of the mix. Personally I think you could work Price in as the backup PG, especially with Dun back on the court. I would NEVER play Ford with Watson at the 1-2. You could go small with Head at the 2 if need be, and only with Watson at PG.