Yes CX would work, to fit larger tires, and fenders, which you will want. You may be surprised how you don't need huge tires. I rode hybrids tricked into roadies, and cx bikes. I had 35mm and 38mm tires on them. I switched to a road frame and ride 25mm tires. I can't be sloppy, I had to invest in better rims because I am 6'3 and 250 lbs without gear, but I have never regretted it. One caveat, spend the money on tires now, so you don't spend time and more money on fixing flats. If you do go skinny look a Conti top touring 2000's they are 28mm, and I think they make on in the 30's as well. There are a few other bullet proof tires someone else will recommend. It will take a week or two for your legs to adjust to your larger chainring, but adjust they will and you will fly. Good luck!