Shawn,
The schneurle Fox 15 has a LOT more power than the slant-plug 15. It should be able to get the wings to carry the added 5 or 6 ounces, but DO keep the speed up.
That means, in effect, don't try for extemely sharp turns - they bleed off too much speed for the wings to work as well as we'd like. As a trainer? Sounds great. Now, keep the young ladies interested, and developing CL love and skills, both.