Great decision going for the DRW truck, it will make the camper handle much better. As for 4WD or 2WD that is really up to you. If you plan on going into remote areas I would say go with the 4WD. If your camping is in developed areas then a 2WD is more than sufficient. As for slippery conditions, if you need 4WD then you have no business being on the road in the first place. Anyway, decide your primary form of camping and let that guide you into what drive train to go with. BTW I would also go with the gas engine, one gets to the destination just not as fast. But then speed kills and those speeding by cannot enjoy the scenery.