From my experience so far. The bigger the plane the better it is for a beginner. A big "trainer" plane is so much more stable then smaller planes just because the wind has less effect on it. Also a big "trainer" plane will be slightly easier to land and you can see it better.

When I was about 15, I also wanted something small just because I wanted the ability to be able to transport it on my bicycle to the local elementary school soccer field. Don't try flying at a school field or soccer field. Usually it's not enough space and is dangerous if you lose control.