It also didn't take long to figure out that the front driveshaft just wasn't going to work. The angles were too steep, and we just wasted a few hundred bucks on a driveshaft we can't use. It didn't help matters that we started with a low-pinion housing either.
After spending most of day in the dirt in 2WD, we have decided our best solution is some kind of underdrive unit to move the transfer case back further in the vehicle. This would not only give us better off-road gear selectability, but also grant us a much longer front driveshaft with a less severe angle.