Hello Kevin,
Send me your email in my PM and i'll send you the servo calc excell software. Very useful software to size servo...
A cheaper solution would be to play with different prop and see the flying performance. A perfect prop for 1/4 scale is 18x6, 18x8 or 18x10. Maybe is to strong for the G26 but you can try with 17x8 or 17x10 prop and see the difference???

Less speed and more vertical thrust make sens with aerobatic planes.
Scou