I would like one, fairly lightweight to carry a B10 (800-900kg rating?).

But I am so broke it's not funny, just bought a new Eaton, crash repairs....blah blah.

If you want I could do some 3D models (of your design obviously) of the trailers for interests sake, can offer other drawing services as well if it helps keep costs down. I did most the shop drawings in my dads metal fabrication place in new guinea so very familiar with my sections etc.