Question: too much camper - too little truck

That TC is supposedly designed for short bed trucks, so it should be okay, but still, a TC on a SRW truck is asking a lot. You might first want to get the truck weighed with and without the camper on it to make sure your weights are within limits. The easiest fix is adding air springs and the best shocks. I'm not sure, but perhaps lateral improvements can be made with sway bar(s).