The VX tow specs basically duplicate those of the SWB Trooper RS: 5000lbs. So as long as you're comfortable and the load doesn't exceed the specs you should be in good shape. Just remember that things happen a lot faster with the SWB, but the plus is you get more manuverability too.
If you're planning on towing a lot with heavy loads and long distances you should also consider an auxiliary transmission cooler. If you haven't serviced your axles recently this would be a good opportunity to do so with a good quality synthetic such as Mobil-1.