I discussed this at length with Nikku and Jamil Ustaads. Jamil tells me that the mudguards are actually going to go up by about another inch, by the time he finishes the vehicle (they're still a work in progress, after the initial fabrication). By shifting the front and rear shackles inwards, by about 4 or so inches, the vehicle should also gain a couple of inches height. In addition to this, we're also going to position the bump stops in such a manner that they'll prevent any sort of rubbing from occurring (that is, by preventing any further travel of the shocks/springs). Hopefully, this SHOULD solve any potential problems with regards to rubbing. THIS aspect, however, is pretty much inevitable, when you mount such huge wheels.
And anyways...if the wheels rub too MUCH against the mudguards...we'll simply remove the wheel-arches, altogether!