thats a good sized motor and approx. equal to a 50 size glow,I think you would be safe with a 60esc either with a built -in BEC or a seperate bec such as a hacker or castle creations. you didnt state your battery size but I would go with a 30004s pack.thats my 2 cents and you need to decide what kind of aerobatic performance you want. figure a 100 watts per poundfor general flying ..if you want awerobatics look for 250 per pound.I might be a bit off only because I am not familiar with rimfire but go to GP and I bet they have a chart to guide you precisely.prop wise an electric apc 12x6 sounds like a goostart and maybe a 14x7..would love to know what others think. take your time and have fun..