A little experience
I have sailed quite a bit in Americans. They are OK -nothing special. They are not particularly sturdy, so you have to take very good care of them. They are simple, so there is not too much to do. You can seat four adults in them, but there is not much room for comfort. If you want basic, fairly slow sailing sitting upright for four people you will be fine with the American boats. You might want to make sure that you can put a small trolling motor on them - the ones I used had no motor and no place for one, so if you got caught out and the wind dies, you'll be out there for a while. I would look around - depending on your budget you might be able to do better.