Good find on the wheels, a couple years ago, those weren't available.

The 4l30e is your transmission. But if you aren't doing any street driving, just off road in 4 low, that shouldn't be a problem.

There is not that much difference between 35-36, but you're already pushing it for axle strength, and 36s will be a bit harder to fit. Plus the BFG's is an updated design, will grip, last longer, and ride much better.

94redrodeo, the second gen d44 seems to be weaker then first gens. I'm guessing there is more of a neck down in shafts. Ask Bansil, they've snapped 2 or 3 shafts now with 32-33s and they do not wheel hard at all.