Hello I am a newbie as well, I plant a similar area in the St. Lawrence river area of Northern NY 3-6" of soil and solid granit. Get a PH on the soil there are actually numerous products that will work well. I put in some stuff called "bird and buck" from Pheasants Forever and spread proper qty of lime and 10-10-10 fertilizer after last frost.
This mix has done great by me and covers the full spectrum of critters. Should help out the grouse and turkey populations in WI as well as attracting deer!
Good Luck! Oops almost forgot here is the Blog: (I paid 68 per bag)
"A unique combination of different clovers, legumes and grasses designed to produce superior habitat for deer, turkeys and upland game birds. Each bag will cover 2-3 acres. This mix has been successfully used on Filter Strips and CREP Buffers for a diverse wildlife mix. Field tested in Ohio for the past 3 years. If you want results that will blow you away....this mixture is a proven success! "