I started ASII in July. So in 4 months I have accumulated 65 out of the 100 hours required in the Aztec. I've also completed several ground schools. My best guess is that I'll be done by Feb or March of next year (7 months for ASII).
The major delay you're going to face in ASII is the quality of the airplanes. I don't know if you visited ATA yet but their airplanes are the absolute worst I've ever seen anywhere (I've been flying on and off for 19 years). They simply are not maintained and when they are taken in for maintenance, more often than not, the problem is not fixed - you'll see it again on your next flight. Major stuff, too. Engines (we've had 3 engine failures in the Aztecs since I've been there - plus tons of cancellations due to engine problems), radios, brakes (I've heard of more brake failures than I can count - it's a realy problem with our Aztecs), transponders .... etc, etc. The way things are running right now you can plan on one half of your flights being maintenance cancellations.
On the plus side, their ground schools (particularly the CL-65 Regional Jet sim) are very good and they do seem to have better connections with the airlines than anyone else I know of.
ATA grads are getting placed. The majority these days are going to ACA (starting with a 3-month "no pay" internship). Rumor has it that Great Lakes will be here in a month to hire a dozen or so. My advice is to get your initial training somewhere else (if you haven't already done so) and come to ATA for ASII so you can take advantages of their airline connections. Just keep in mind that you're going to have some very "interesting" flights in ASII (and I don't mean that in a good way. LOL). Good luck.