I towed a single axle 8.5x12' enclosed cargo trailer for several years. It lacked in cargo carrying capacity, and even with a radius front, pulled hard for it's size. It had wheels under, but with torsion suspension.
I upgraded to the all aluminum 7x23 pictured. It has spring assist doors (two finger lift) front/rear. Also has entry door, other side. The advertised/not scaled wt, is 2,200. It has all LED lighting inside and out. It has finished white ceiling, and walls. It is low to the ground, with torsion suspension, wheels outside, not under, and a 3,800 CCC.
This is a super nice tow, even in wind, with no WDH. Tows much easier than the 8.5x12 that I had. With the V-nose, I can fit 3 long tracked mountain sleds, and lots of gear.
OP should not make the mistake of short and wide, as IMO, longer and say 7' wide, just works better in my experience.
Jerry