fsstnotch Josh There's the things to check, Make sure the tires are up to spec. The load range is most important on this. Make sure you go under the trailer and look for any frame damage. Check e-bay for prices for the same size trailer. Make sure the frame is not rotting out and the floor is solid. The size for a cobra is OK, You may have trouble fitting a full size car into the trailer with stuff in front. As far as pulling a full load, UNLESS on flat ground, DON'T use overdrive going up hill, slow down a little and let the trans go into 3rd gear without lockup. This is alot easier on the trans. Get a trans fluid temp gauge installed if you can. 65mph will get you there 5 minutes later than doing 70 mph and maybe in one piece.
You might want to look at the 24' trailers. They have more room for parts. You are going to be a brick pushing through the air. The wieght of car,trailer, and spare parts will out wieght your tow rig. I am looking at a lowhauler, for my needs. Enough for car and parts. More aero that standard size trailers. If have to work on car in trailer you are bent over anyway. Places I goto have garages anyway. You can also fit a lowhauler in the garage with a 7' door. Does your truck have a haul or tow mode? you want to use this with the trailer, it changes the shifting of the trans and gives full pressure to the trans all the time. Hope you are packed, stay safe, hear from you soon. Rick L. ps hope the breakables are out of the bedroom