IMHO, on a well designed plane this formula is very useful. In this case, the ailerons are definitely over-sized and will not be used to their potential. There will be very little deflection for the desired effect.
In this case they are 5 x 19.5 in size. 97.5 square inch. Times 1.2 results in 117 in.oz.
In thinking this control surface will not be used to potential I feel the S3010 will do nicely although by that formula will be under powered. Using a 6 volt NiMh 5 cell battery pack yields 90 oz-in at 6 volts and 72 oz-in at 4.8 battery drain.
This plane is spec'd at 6 pounds with 12oz/sq ft and powered by a OS 62FS. No barn burner.
Just my thoughts. But excellent formula Leroy. I saved it.