I received my AA Visa in July, 2010 and after spending required amount
the miles posted in mid- november.

What is the general thought on how soon i can cancel the card without
worrying about them recouping the miles, or is this nothing to worry
about. Also, i have another card that i got a bonus just for signing up.
when can i cancel that one.

i am trying to free up in case i need to churn more cards.