Hey...I think you are fine submitting your material now. In fact, many of the actual med students I met at my interviews had interviewed and received letters of acceptance in March/April.
I interviewed and got accepted to KCUMB. The school is def. one of the top notch DO schools in the Midwest. They have an outstanding systems based curriculum, a tight knit community of students, and an excellent reputation (they are one of the top five oldest DO schools in the country I think.)
The school is awesome. I interviewed in September and was accepted as well. For a bunch of reasons, I just released my seat today and will not be attending. Nonetheless, I was VERY impressed by the school. Slightly less than DMU though.