towing 2720SL with 01 Jeep Grand Cherokee

Have been reading the past threads. Am really learning alot but soooo much more needed. WE are presently in the process of buying a used 06 2720SL. Please tell me if I have this correct. After much researc, I found the GCWR of Jeep to be 7500#. Dry weight of TM 2865# and dry weight of Jeep 3669#. Therefore, we can add only add 966# more to total weight with only 796# of this going into the TM. Does this sound correct? And the dry weight of the trailer does not include AC/heater, any upgrades such as extra cabinets, microwave, fans, etc. Correct?