1. How hard will it be to find camping sites in or near National parks with this 42 ft camper? Most National and State Parks were designed years ago for small RVs. Staying below 36' would help in that regard.
2. At what point do you say I need a DRW not a SRW truck? Start to think about DRW at 14,000-16,000lbs.
3. What difficulties will I have with this size fifth-wheel that I would not have with a 35 fter? I have to believe that 42 footer is way too much for your 2500. We have a 40 footer and were not able to use a few CGs during our summer trip to NY.