Good for you for deciding to learn to fly airplanes equipped with 'conventional' undercarriage. You will have fun, learn a lot, and open the door to interesting aircraft that otherwise would be inaccessible to you.
As you say, everyone is different; but I would say about 10 hours or less should see you solo in a Cub. For what it's worth, it took me five hours to go solo in a Citabria; I consider myself an 'average' pilot.
I haven't flown a Moth (yet), so can't help you on your second question.