2 Bridges to Catamount is still very runable for most competent class I-II boaters. Bigger, faster, water requires faster decision making and creates specific features. That section is still considered to be class I-II. HOWEVER, the water is colder and much swifter, eddy lines and wave trains are bigger. These sections become less family (and dog) friendly as levels increase as swimming becomes more consequential. Wear your life jacket and have a plan!
Catamount's camping is first-come-first-served, get there early, and best of luck on a weekend. The takeout is a hard pull to get to Catamount's river left boat ramp. Just after the road bridge(s) you need to make your move. The higher the water, the harder the move. This can easily be scouted, and I suggest you do, prior to your trip. Missing the ramp will require you to float the canyon below to Pinball Ramp and most likely run Rodeo Rapid (III).
Before you go: