Cheaper can be good too! I own a TT GP 42 and I really like the little thing. Didn't cost much, and it runs like...well,really good. But if you have an engine already such as the OS, and it's appropriate, then run it. It should be fine as Simon's first plane,and engine setup. Keep us informed of your progress, and if you haven't already, you should arrange some instruction.Have fun with it!