You cannot exceed any axle.
Probably 12,000 on the steer.
And 34,000 on the rears with axle down.
46,000 minus 26,000 is 20,000 payload.
Does the 26,000 include you, full fuel tanks, and unloading equipment/personal stuff.
Liftgate usually requires pallet jack.
I’d start at 16-17,000 and see...