When I was hauling over sized loads,..anything 10' wide or wider required a permit and NO WEEK END hauling,..but the one advantage of a 10' wide load,..I did not need an escort,..12' and wider I did..16' and wider required 2 state approved escorts and 2 highway patrol escorts,
Just to cover any legal issues, that could leave stuck on the side of the road somewhere, I would stick with 8'6" wide trailer, just my 2 cents worth