I think everyone's comments on the axle location is based on the camera angle of the original photo, combined with the width of the fenders. It makes it look like the near side tandem is right at the back of the trailer, but looking at the far side fender shows it is actually much closer to a standard 60/40 setup (on a tandem, measure to the pivot pin on the walking beam between the springs). If you post a square side-on shot, I suspect most of these comments will stop.
So with a 10k rating, I assume there are brakes on both axles? In my state, trailers with that sort of rating also need to be inspected (the cutoff for brakes and inspections is 3k, here).
So what'd you haul home that needed that sort of capacity, a VMC? Forklift? Wasp radial? CNC plasma table? Several pallets of untempered import hammer heads? Tire from an earth mover to be used as a jungle gym?
--Glenn Lyford