Your trailer weight is going to be unreal in and of itself not to mention what folks have already mentioned. I have a weekend warrior which is known to be on the lighter weight side in comparision to many other manufacturors. My 26 footer with no slideouts, aluminum siding (lighter than smooth side fiberglass), and only 2 axles weighed in on the scales at 11,500 lbs. That was loaded with 1 dirtbike, 1 med size quad, 1 mini quad and the regular stuff like water, propane, gas for the genny etc.
Again, I'd be just as concerned with the overall weight of everything you're going to be pulling let alone the length issues. Toyhaulers are much heavier than regular trailers you've probably already noticed that. Also, I don't trust the sticker in regard to dry weight, put that puppy on a scale before you buy it then figure in 1,000+lbs of water, ?lbs of gas (pump station/gen fuel), clothes, food, etc etc etc.