If you feel that you can correctly and efficiently tie down both the TJ and the SXS in 22 foot of trailer, then go with that. You can have the trailer custom built to have the axles biased more toward the rear to give you the needed tongue weight. I would also make sure the trailer is heavy duty enough to haul both. I have seen a few 22' trailers bend with a jeep and 4-wheeler/sxs loaded like you are trying They had enough tongue weight with the sxs on the front, but too much weight from the jeep on the back.
80 CJ-5, 74 CJ-6, 56 CJ-5