A 28" tall tire will be small on this rig even though some called for 195/75s. A 235/75 is roughly 29.4" tall depending on maker but I have that object my 5th ave.
I agree a gear swap to 4.10s is a lil ridiculous for a driver but why need a hard launch in a 4wd? He11 put it in 4low and call it good 3.5grs would be good for all around. My 89 2wd shortbox with a 318/727 will break loose the 31x10.50s it had in the rear(peg leg) and our 2wd Rc wouldn't. 89 has 3.5s and the Rc had 3.23s both rabid 31s in the rear