We usually have great luck booking with AA, but your mileage may vary.
We booked 2 FC tickets for 33,750 miles each with the current promotion, which is a great deal considering that we usually buy coach tickets and use 30,000 miles each to upgrade them. We did have to move our dates a little to get 2 FC seats on the one nonstop of the day in and out of LAX, but some flexibility is always needed when booking award seats.
We also subscribed to the website experflyer for about $10 for a month to get a better picture of available inventory for both awards and for purchase, so that we could compare all of our options. Just being able to do a quick seach every day of inventory without having to re-key all the data made that puchase worth the cost! It as a little scary at how much the inventory changes over the matter of a few weeks.
If you do use your miles for the Fall special, you should note that there may be less flexibility in making changes to your award tickets if the result of those changes takes it outside the dates when flights on the special award are available. So if you book for October, then need to rebook for December, you may have to pay the fee to redeposit the award ($100) and rebook a new award costing more miles.
Best of luck -- Suzanne