You may want to look at the information contained in Section C of the Common Data Sets for each school: Section C7 gives information on the academic and non-academic admission factors and how they are weighted by each school; Sections C9-C11 give objective information on GPA and standardized test scores for matriculated students in a particular academic year. These numbers may allow you to come up with a rough estimate your chances for admission.
A couple of notes. UVa used to limit OOS admits to 27% of an incoming freshman class; I don’t know whether that cap still applies, or has been reduced or increased. U of M by contrast has close to 50% of its undergraduates from OOS. Also, U of M recomputes academic GPA to eliminate plusses and minuses (i.e., a B+ becomes a B (3.0) and an A- becomes an A (4.0)); this may help you with U of M if all you have is a couple of Bs and everything else an A.