For what you are trying to accomplish, I would stick with your axles. You have a LP30 and a rear 44. They are fine for the task of a 35" tire with intermediate wheeling. I would re-gear, add some type of selectable locker, chromoly shafts, install a currie or savvy short arm lift, install a SYE and TW drive shaft, Currie steering and slap on the 35". For extended lines in the front, get a set of YJ lines from any supply house. They are longer than TJ lines.
Once that's all done, get an alignment and have fun.
We know that a Dana 30 can be made to survive places like Johnson Valley. If his intermediate wheeling doesn't frequently exceed that, he should be quite fine with what he has.