There are a number of online trajectory calculators. I've been using this one. My initial guestimate as to where we should launch for a landing in Livonia dumped me right at the edge of Metro Airport... oops. Scratch that one, and just to be on the safe side, let's go a little further Northwest. We have quite a few lakes in our area, so landing is crucial if we don't want to go beg someone to take us out on a boat.
Keeping this in mind, and back tracing, I found a suitable launch site in Gratiot County. There's a few options there, and they all dump us in Oakland county near Waterford. I think that's the best option.