The only way he can win his primary is via crossover Democrat votes.
So in the general, not a single Democrat who voted in the republican primary will vote for him. And I can't see any MAGA voter supporting him in the general -- they will stay home.
Ditto for Kemp.
It's going to be Governor Water Buffalo and a Democrat SOS.
The best we can hope for is that republicans win veto-proof numbers in the legislature and that as many RINOs as possible get replaced by MAGA people in the primary this summer.
The Republican majorities aren't veto-proof even now, and redistricting is very likely to result in Democrat gains in both houses according to the Princeton Gerrymandering Project and they are experts on the subject of Democrat gerrymanders (however it was "Republicans" who created these particular Democrat-friendly maps).
They indicate at least some loss for the Republicans in the state Senate, perhaps up to -4, and approximately -5 to -7 in the state House. That's just the effects of redistricting and doesn't account for other issues which may affect the November elections. Nor of course does it account for fraud, and this IS Georgia.