You will not like living in that, even for a few months. Tin and thin paneling with no insulation will not be warm in the winter or cool in the summer. I hope it works out for you.
As for towing, the wind resistance is far more demanding than the weight. It will be working very hard to pull that through the air. Also, single axle trailers tend to move and sway more than double axles, the extra axle makes them want to track in a straight line better. Just means you will need to keep the speed down and pay more attention. Watch how you load it to keep the tongue weight high.
