Ok I already ordered a regular sport version I will be flying it on a plane which only weighs around 8 lbs . Its actually the new Sig 4-star 64 arf. Sig got new owners awhile back and finally are putting out some good arfs planes. I fly mostly 30cc and 50cc 100 cc aerobatic planes like the edges and extras . This plane will just be a plane I can throw in the truck and go fly and have fun. I think the regular 115 will be more than enough power with a 17/4 wide blade prop. The plane is designed to fly with a 60 to 95 cc 4 stroke. Thanks for the info .