i would not reccomend that engine. flying was a miserable experiance or me with that one. the only thing that kept me going is i wanted to learn. i was progressing slowly until i got the fx, where i jsut soared. i was capable of flying solo in 3 months. after 3 months, my instructor wwas holding the button down all the time, but i was too cautious. finally, after 6 months, he let me go.