My 2008 Hitchhiker II at 12,000 lbs wet is about the same weight as yours. For the first six years I used LT load range E tires with a good reputation and still had blowouts. For the past six years I have used Carlisle ST load-range F tires and have no problem of any kind with them. (These were all replaced with new ones last year.)
One bit of evidence is not proof, of course, but I'm going to continue using one load-range higher than what is required.