Thanks for this. Glad it worked out for him... So once he got the BMC he was okay? Or did he need to get levelers or a lift? My truck is a TTUE, so the front comes leveled from the factory... I don't go in for crawling, it's more of an overland build. That said there are ruts, bumps, etc. etc... Similar to fireroads in Colorado. Since, in fact, I'll mostly be on fire roads in California, ha ha. Wondering about top-of-tire clearance, issues with bottoming out, etc...
BMC was all he needed. Though there is some chance of the OEM upper control arms getting run in some circumstances, but nothing major.
Regarding leveling kits. PLEASE, don't compromise with spacers. I know all too well how my rig started to tell me how I had to spend money to do things right.
My '08 was factory suspension and I beat the hell out of it - even with an ARB bumper. I bought a used '13 that someone modded for being a Main Street cruiser.
I've broken many things. Mainly because of spacers and poor suspension mods.
There are some decent moderate-priced 2-3" suspension options perfect for whAt you do.
All this said, my buddy wasn't running 33-34" tires.
Separate thought for consideration: I ran the KOs for years and would burn through tread very quickly (every 20K miles). I thought I'd give the Nitto trail grappler (AT) a shot. I like them more and they are the only ATs with the aggressive look that came with a mileage warranty.
I've found them great on the forest roads and crawling in Utah. I have 33" 295s. Wasn't sure what to properly set the PSI at and they felt horrible. Nitto customer service had an engineer call me back, ask me questions about my specific set-up (bumper, winch, etc.) and then dialed me in to recommended PSI for highway, forest roads, and airing down in Utah. I'm a NITTO fan now.