well, if he's planning on driving paved roads for a while I say run around max. If he's gonna wheel then he's probably not gonna feel like pumping it up, only to deflate it for wheelin' later.
Bigger tires aren't always bad, if you cruise for a long time then it won't be soo bad, but for stop and go, or where you have to accelerate a lot, you might consider getting some eco-tires for highway cruisin', and have your mud/All terrains for off-road applications.
I'm guessing those rims already on there with the 32's aren't stock? if you've got 2 sets of rims, you could go with 2 sets of tires/wheels. one with LRR tires for highway, and one for mud/snow/sand/dirt/rocks/etc. Depending on how you wanna go.
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