The support arms are adjustable in width, so it should work.
No the tires are sold. They do get flat spots if boat is left on cart. Flat spots resolved themselves.
No, it fits between the pontoons, but the supports aren’t tall enough. The pontoons will be sitting on the wheels. It’s a sturdy little thing and is easy to assemble, just doesn’t work for a bass raider. You can build a decent one with 2x4s and wheels from Harbor Freight, videos on YouTube.
I would not know, I have a motorized oldtown 106 and after trying another system to transport my kayak that did not work, I bought this one, which works perfect