Are you going to do the total 5 acres in one planting? Are you just worrying about summer forage or fall and winter? I plot in marathon county, just to the south. I have had good luck with ladino clover and red clovers. Honestly nothing draws deer and bucks better than beans and with 5 acres up in that area, that should be more than enough area to have standing beans pods in the fall.
Two strategies I would look at doing and not in any order. One, break up this five acre plot in 3 or 4 plots. I would plant an acre of ladino clover. An acre of cereal grains, oats and rye, mostly rye because of earlier freezing temps, mix in winter peas at planting. My deer love winter peas and will get them “using” the plot before the grains become extremely attractive, end of Oct into November until it snows. The rest I would plant, turnips, radishes and Winfred brassica. This should give a good amount of forage into the winter months, which is vital up there.
The other strategy I would consider is plant the acreage in beans. Then I would comeback and broadcast, rye, turnips and radishes over the top when the beans yellow. This should give “green matter” from spring all the way through seasons end. You’ll also have standing beans for deer in the winter time.
Both of these should improve hunting/herd conditions. It can seem like a lot information. For the first year tame your goals. Simply start by spraying it during spring green up and hitting it again a month later. Then spend your time getting ground prepped to your liking and just get something into the ground the first year and don’t worry about it. IMO, nothing sucks more than opening new ground that first year and if you have limited equipment, just getting it open and planted with something is a major win in my book for the year. After that Focus long term goals and start improving and adapting to what works best.
This is a great place to post and ask questions, a lot of people know there stuff and you’ll always get more than one right answer to any question or problem.