Removing the A/C

You could look for a 151, which is smaller than the 17x line and came in around 1900 pounds.  Few were made so it would be harder to find one, but they do occasionally pop up here.  If you packed carefully you would be at your limit - but legal.

The dry weights of the pods listed do not include items such as the battery, A/C, propane tank, convection microwave and any water you might carry.  You always want to keep a few gallons in the black tank so that any residue doesn't dry out and harden.  Then you want to keep a few gallons in the fresh tank for using the toilet, washing hands while travelling, more if you plan to dry camp.  water weighs about 8 lb. per gallon.  You also didn't factor any cords, hoses, supplies, utensils, food, clothing, and other items you normally stock the pod with which can add 100-200 lbs. easily.  I haven't weight mine, but I would hazard to guess my fully loaded 171 (2300 lb. dry) is closer to 3,000 lb. once everything is factored in.