I was wondering if there are any suspension upgrades that can easily be done for hauling more weight and handling large pot holes better? I am moving 1500 miles away and all I can bring it what will fit on a small tailer and in the car. I am looking to run about 1000-1200# total trailer weight. I have installed a hitch and tailer harness. Are their any rear suspension upgrades to help handle the tongue weight (will keep it between 100-150#) plus about 300# of clothes and tools that will be in the car?