Two things that needed my upmost attention: One, was to have a rooftop air conditioner installed since where I live, it is required for any type of camping due to the high levels of humidity.
And the second, was with more importance. I would have 15" custom duallys made. The Toyota came with stock 14" duallys. The front's are stock 15" rims. In order to use the four wheel drive, all the rims had to match in size. Why this was not done earlier, is a good question. The speedometer was reading faster than the actual speed hence the mileage was also affected as well. So, with a lot of research and asking a lot of questions a phone call to Custom Commercial Wheel was made and 4 new custom rims were ordered.