Skip,
I flew a buddy's and helped him trim it out, box stock from the kit with a Fox 40. Flew like a good stunter should, very honest and easy to fly well. I built one from plans with a Tigre 46 which was slightly larger than the Sterling kit and spent the same amount of time making it a trimmed out model as my buddy's. No huge difference. You should like it, it's a nice flying model with a good wing and moments.
Chris...