Sust and Deca have long half lives. They will require 3 wks to clear, before you can actually start recovering. There is no exact science to PCT, but here is what I would do.
Through the cycle, would use HCG 250-500iu, 2x wk, stopping a few days before PCT.
3 Wks after last shots of Sust and Deca, take Clomid for 7 days at 100mg. Then 14 more days at 50mg