Dual cases are cheap to do. $350 for the adapter, retube the CV driveshaft for the rear, and run a square driveshaft in the front.
But if you want to run it on the road alot it will not be fun with just 4.10s. 5.29s are plenty strong if you go with a good brand and they are setup well, especially if you cryo them. There was a big rush to a few years ago to go back to 4.10s a few years ago since they were technically stronger, but in the end it seemed to cause more strain on other parts which lead to more people going back to the 5.29s. Its kinda a toss up really, either way has it good points and its bad.