The Titan will pull that weight just fine. IMO 30ft is too long for a short wheel base 1/2 ton truck. The truck alone just doesn't have the weight to help keep the TT stable in a emergency situation. yeah I know a lot of people have no issues and HVT has logged several thousand miles and wish him the best forever and ever. I am sure that HVT long bed truck is doing a fine job.
I also subscribe to the 85% rule, keeping the weight 85% of the max GVWR. This is mostly for saftey first and not wearing ou the truck second.
This guys has some good solid info to read.
Use to be RV Towing tips but he closed it down and started up this blog
David's RV Tips