If a 3/4 ton truck can't pull a 7500 lb trailer around here, there's a problem.
I tow a 5400lb (loaded) camper all over middle Tennessee with a V-6 small truck. I have no problems.
The stretch from Chattanooga to Knoxville is flat by Tennessee standards. I'd be more concerned by all the wackos that drive on I-40, the big trucks are crazy.
There's a great campground in Crossville, Tn. only a few miles off of I-40 if your interested, it's called Deer Run RV Resort.
2014 Aerolite 213 RBSL
2016 Chevrolet Colorado