5. Thinking about taking a Golf Cart or ATV or 2 Dirt Bikes (not on top of list)
With this restriction, you need to consider a 5er or a TT toy hauler. This way you have a run around vehicle and tow vehicle, somewhere to live (and will require separation from the run-around vehicle), and a garage for the 'toys'.
Motor Homes with garages are very scarce, and then you'd need to tow another vehicle, or use an auto trailer to bring the "toed" along so it will be off the ground.
For your situation, I'd vote for the 5er Toy Hauler. They make nice lofts in some for the kids, and the garage area can also be equipped with bunks.