So if it all gets past all that and he ends up in jail in 3 years I say Biden pardons him on the way out if a Republican is coming in since the Republican will do it anyway and Biden always wants to look nice. Actually not pardon, will give a commutation so he can get out of jail but still be guilty.

On the other hand, there might be enough maga idiots around to push him to be the Republican candidate after Biden's second term and that will hand the election to the Democrats who will run on a keep the a****** in jail platform.
Biden will pardon him not "to look nice", but because -- and not "in spite of the fact that", but precisely because -- as soon as he's out, the Republicans will nominate him again. At least if, as usual, they don't have the sense to all stand back for a single counter-candidate; as soon as there's more than one De Santis, non-Trump votes will be split among them, handing him the nomination, just as is happening now. So he'll most likely be nominated...

Which will -- or at least should; by Dog, I hope it should -- make Kamala a shoo-in in '28. That's why Biden will commutate his sentence (or, who knows, maybe even actually pardon him) in time for the Repo primaries.