Thanks everyone for all the great feedback and advice!!!
I've installed the Timberen springs and figured out that the spring arm socket nuts were really loose which was giving me little to no sway control. I can feel the difference of with the springs and was at a top of the spring/axle gap recommendation (1.5"). I may pop the spacer in there to see if it helps.
Regardless, I think my initial thought that i have a lot of trailer for the truck guess is right. It can be done but safety is paramount. I think I'll downsize to a shorter/lighter trailer in the spring when I have a better chance of selling this one. Until then, we're going to do some short 2-3 hour trips to some of the great state parks here in MO.
Thanks again!!!