Thanks guys. I rode 20 miles yesterday on mostly a paved rail to trail. There happened to be a bike shop right there so I stopped in. I was doing about 11-12 mph on the trail. Once I left the trail it was 2 miles up hill to my home so my muscles hurt for a couple hours afterwards. I'm going to let my muscles tell me if I should ride the next day or take a day off. Today I'm taking a day off. He personally owns a cyclecross bike but he has 28 mm tubeless tires on it. He said that would be the way he goes on my Giant. $100 a pop but if it saves me from 5 flats in each tire I've made my money back. I was surprised at the low tire pressures they run now days. That probably helps with flats too. I would run 90-110 psi in my road bike and 45-60 psi in my MTB back in the day. Maybe if I buy the tires, new bladders for my camel backs (does anyone use them anymore) and a helmet as mine seems too big I can get him to do a fit for me.