First of all, just make sure that you apply to as many schools as you can :)
If you're looking stay in-state, I would recommend putting ISU at the top of your list if it remains the only APA-accredited program after this year. While the other programs in Illinois are very good, the accreditation will save you a good amount of grief when it comes to applying to internships and licensure.
I'm a Ph.D. student, just about done with my internship. However, I started in the SSP program (it's not an Ed.S. because the program is in the Psychology department, not Education). For the first two years, everyone is in the same classes and such, and then when the SSPs go off on their internships during the 3rd year, the doctoral students start to branch into their areas of specialty. The training is very good, as long as you're invested in it. Personally, I did feel that I could have stood to get more counseling training, but honestly, it is hard to get completely well-rounded just from coursework when there are so many facets to school psychology. A lot of your training will come from advanced practica and assistantships, which you will have a hand in choosing.
Personally, I dealt a lot with autism from early childhood through middle school (therapy, home/school consultation, etc.). There is a fast-growing autism clinic in the psychology department that is always looking for help. If you're interested in that type of thing, e-mail me and I'll let you know who you can contact if you want. There is also research always going on concerning all the ecological factors weighing on students. You'll usually see collaboration there with the Developmental Psych folks.
It sounds that your interests fit with a few faculty members, so I'd be confident that you'll find a good academic/dissertation advisor. I mentioned earlier to the person above that there's an open house in the fall (maybe October?). Even though you're not applying this year, you might still be able to check it out.
Let me know if you have any other questions!