Kudzu's Karavan - Project canceled

Well folks, I'm the proud (scared) recipient of a salvaged pop up trailer. It's just the base trailer portion. Someone had already scrapped or parted out the rest. He was going to convert it to a cargo trailer but changed his mind. (He had like 3 trailers there already.) Spent this morning trying to learn SketchUp.
Oy, it's been like 30 years since I've down any CAD work. (Think 2D minicomputer, AutoCad predecessor!) So it took me a few hours just to get far enough into the program to do this little diagram. Though the hardest part was actually measuring the trailer. Think, hope I got those right.

Will upload pics in the next few days. Considering this thing is about as old as my CAD skills it's in pretty good condition. Guess since the camper was sitting on it until a couple months ago the trailer wasn't reallyDoes need the areas of surface rust brushed off & the whole thing repainted. Also need to clean, grease & repack bearing. The tires, though not large in diameter, are much wider than I had expected. These are not the dinky things on HF or NT trailers. They seem in good condition & there's even a spare. Plan on keeping them, at least for now.
It's basically 9'10" x 6'4" with a 4' long tongue. Am currently trying to fumble through the 3D stuff to draw a possible design. The exterior dimensions will need to be about 2-4" wider than the frame to accommodate the bed orientation I want.
The big question is should I stick with 10' length or could I push it out to 11' or even 12' long?


Will upload pics in the next few days. Considering this thing is about as old as my CAD skills it's in pretty good condition. Guess since the camper was sitting on it until a couple months ago the trailer wasn't reallyDoes need the areas of surface rust brushed off & the whole thing repainted. Also need to clean, grease & repack bearing. The tires, though not large in diameter, are much wider than I had expected. These are not the dinky things on HF or NT trailers. They seem in good condition & there's even a spare. Plan on keeping them, at least for now.
It's basically 9'10" x 6'4" with a 4' long tongue. Am currently trying to fumble through the 3D stuff to draw a possible design. The exterior dimensions will need to be about 2-4" wider than the frame to accommodate the bed orientation I want.
The big question is should I stick with 10' length or could I push it out to 11' or even 12' long?