All shooting must be done at least 150 yards from the neighbor's residence. Unless your range was established prior to the implementation of the Michigan State "grandfather clause", that protected pre-existing ranges from closure under noise pollution complaints, your neighbors may petition for relief. They can come after you on several fronts, through direct legal action or code enforcement and county/city commissioners.
9:00 a.m. or 10:00 a.m. to 5:00 p.m. is considered reasonable by most neighbors, weekend shooting causes the most complaints, people want to enjoy their days off without WWIII going on next door. My gun club was challenged even though it's been at it's present location over 70 years. The neighbors wanted peace and quite on the weekends, which is our busiest days. The neighbors lost, but it hasn't been fun or even rewarding to the club to prevail.
Unhappy neighbors aren't a good thing. Indoor shooting facilities rarely generate any noise whatsoever, something to consider should you want to go into business. The thumb area has lots of open land and few cities to deal with. It would be close enough to the larger population centers to be useable without too much driving. Online sales can be conducted anywhere even the most remote locations. Having an online presence will allow for more economic activity than would otherwise occur in Michigan's thumb area.