You will get as many different answers as you get replys on what engine to use and what class to fly. Everybody has a favorite class. ssc or limited b would be fine for a start up, both have pro's and con's. The best advise I could think to give is find out what the other guys at your club want to fly and build for that class. Mixing ssc and limited b ships is doable but you will have more fun if everybody is flying the same stuff. I believe in your region SSC is probably the most flown class if you wanted to consider going to some other events down the road.

There is, or was a grandfather clause in limited that allows for the use of ssc planes in limited class. You could argue that you should start with limited and could use either plane but a 15 size ssc is at a disadvantage in the limited class.