Welcome to the nuthouse. Plenty of ideas and designs here. Check out the "design resources" link up towards the top of the home page.
I realize 8 feet wide in the commercial travel trailer market is typical but around here it is... enormous. Is there a specific reason for those dimensions? If you are needing a certain square footage, 6 or 7 wide plus a bit longer might be a slightly easier to build as well as drag down the road. Not sure where you live but snowmobile trailers are 8' wide and designed to handle two to four machines weighing 600+ pounds each.
Good luck in your build and if you haven't heard yet, we like seeing lots of
