My colony down south has asked this question several times. We decided we can't place a number on it. Lately our fall candidate class has been growing like crazy (considering this is our first year as an A.O.E. colony.

) We doubled our chapter size last class, and are looking forward excitedly! (We Currently have 23 "actives" and 3 Spring "candidates"... since we are a colony nationally our actives are considered equal to chapter candidates)
We decided 4-6 girls would be a successful rush but we wouldn't cap it simply because we wouldn't turn a woman of true quality and that we can see benefiting us and reaping the benefits of A.O.E.
I hope this answers those questions.
Sending up love from the South!