I'd wait for now, and start researching fares, checking daily to get an idea of sales for this route.

Delta airlines do offer 1-stop tix via ATL in same price range. You already have some DL miles. How about earning some more, and going with an award ticket? Your thoughts?

Or, there is a fantastic promo started yesterday by NWA: you can earn close to 50,000 miles per person by doing some shopping, dining and playing games online, now thru 7/31/8. Get all of your passengers to play, and maybe do some other things, and you will have enough miles for award tix for all travellers. You can use NWA miles to book awards on DL flights.

For money tickets: you should look into using some discount coupons.

Have you seen 2008 edition of entertainment books with AA coupons?
5% off fares cpn = minimum $34.40 per AA ticket savings, it expires 12/31/08.

2009 edition of e-book will be avail. mid-July, and it should have new 5% cpn. Perhaps not AA, but it is something to keep in mind.

There is also 10% off vacations (fare plus hotel) cpn in e-book for "bookings" made by 12/31/08, you might be able to use it for Feb 09 trip!