I saw on a board somewhere the quote, "Head coahing at SC is only temporary, but a membership at Augusta National is for life."
If he does well, it's gravy. If he doesn't, there's always Augusta. The tough recruiting, alumni engagements, and high expectations of boosters were enough for him to leave Florida. Now he's getting back into those same conditions at SC.
They'll be better and contend for SEC titles, but he won't have free reign as he did at in the glory years at Florida.