Their stage 8 kit with 4.5in lift looks pretty well put together. More hard core than what I would need and at $5700, more than I would want to spend for what I do.
Most people on this site go with level kits at 2” or less and CST offers those too
I have a 2” ReadyLift with stock 18s and 295-70s. No rub at all. I did rub after adding 1.5in spacers. Not sure about the 285s you’re looking at.
Also have seen people claiming to stuff in 35s on stock TBs?