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The elephant in the room, as Allan says, is you need a very bright guide star for AO at 10hz (mag 3?). Simple test, take 1/10th of a second guide exposures on what you think is a normal brightesh guide star and see if you think you can guide on that!.
I dont remember if you have a rotator Paul. A rotator is an absolute necessity with AO (at 10hz) IMO, forget it without one. The chance of getting a sufficiently bright star for 10hz OAG AO with a given object well composed is just about nil without a rotator.
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