Guessing TX is hot in June? Frying temps. Tried frame bags? They work well for me. I'm 235, with a Rigid Karate Monkey, plus 29er tires, so not light either. I like my big fork cages for carrying heavy stuff down low. My tours are in New England, so not as hot, more water. But some big mountains too, I " try " for 65 lbs or so, with food and water. Cheers.