M.F.
St. Michaels is in Livonia, I was looking at them when we were looking for a private school. We are closer to Farmington and ended up at St. Fabian. Didn't like it. We ended up buying a house in Novi so our kids go to public school now.
However, when we had our daughter in Preschool we went to Our Lady of Sorrows. It is not in any of the cities you mentioned but is close to Livonia. It's in Farmington, 10 mile and Orchard Lake. They go from pre-k up to 8th grade. I loved it there and if we didn't move to Novi we would still be there.
Tons of volunteer opportunities and they don't FORCE you volunteer like some private schools do. If you can't volunteer you aren't made to pay an extra few hundred $$$ to make up for it.
From my experience, the staff was great and so were the parents...I'm sure not all of them will be, but no one is perfect right??? :o)
There are a number of websites you can utilize to help with your decision. Schooldigger.com is one I remember off the top of my head.
Happy Hunting!