Wow, those are some great DATs. I was about to tell you not to worry cuz you will get in somewhere for sure with those scores. But then I saw you only applied to four schools. With a 2.8, you *REALLY* need to add a few more. I dont know much about SIU, but the competition at UIC is crazy since it only has about 80 seats and its the only school in the Chicago area. As for Michigan, lets just say I am a Michigan resident, went to Michigan for undergrad, had a 3.32 and 22aa/22ts/17pat, and didnt even get an interview. And yes, I applied early.
It's not too late to add some schools, but I recommend you do it NOW