Be prepared to possibly use longer lines. It depends on how fast you are willing to turn around and around plus how fast the plane goes. A fast plane/engine combo will feel like you are about to screw yourself into the ground if the lines are too short. a quick fix is to use longer lines. I recommend at least 32 foot or better yet 35 foot lines to start. There are some who use lines over 40 feet on some half A planes!

Robert