It would be great! Some guys are flying them with 91fx or big 4 strokes and getting what they claim to be 110- 130 mph, but have to re-enforce the wing by glassing the center and also do changes to the firewall to re-enforce. I use a 61thunder tiger and the 61 OS will be faster. Never clocked it, but it must be around 80mph and is perfect for what you want. Does everything you listed perfect... Only thing you have to do is renforce the landing gear area... Not hard to do. Just type in SHoestring and check out the threads... Or better yet start a thread GP Shoestring... What's your opinion? See what people think.... Everybody who owns a Shoestring loves it... I know you will love it too!