Thinking about getting a small ( 18ft) toy hauler to take my dirtbike to the races with and camp in. I am estimating that loaded and with water tanks filled,ect, it will weigh around 4500lbs. I know our tow rating is 5000lbs. I was wondering if you guys with towing expierence can tell me does the FJ really have enough power to pull that kind of weight?? Espically up and down the mountains of West Virginia??? Also what should I expect to see as far has fuel mileage? Thanks in advanced!!