I wonder why you chose September expiration if you'll be selling your calls in mid-September. I'm new to options and learning it, so I question: wouldn't the time value deteriorate in september leaving you with mostly intrinsic value? Or is that mainly happening in the last days before expiration?
I bought 32's and 35's mix of Dec and Jan calls and will be selling them on the divi run alike.
I know the AGNC $34 September12 contracts will expire sooner than the rest. I bought them because I noticed that the volatility on them for some reason is greater. The second reason I bought them is the same reason people buy cheap beer, more bang for your buck.
*Disclaimer: Options trading can be high risk and cause loss of capital. I am not a financial advisor nor an expert, nor do I consider myself as such. I'm only wishing to share my trades with my friends.