C should be fine for what he's doing.
AlbanyCartel, how much thrust do those engines put out ?
I couldnt find any faqs on aproximate thrust.
Where I live you have to have a license to purchase those larger rocket motors. I was thinking 24 mm was teh biggest at hobey stores. You can order big monsters but you have to be a real rocket junkie. Sucks spending a year building it and 30 sec for things to go wrong(to explode)
