The 3 acres is plenty large enough. The area sounds like a decent bedding area already, if its not for some reason, the food plot should make it one.

Do the soil test. Eventually, I'd go to a clover or clover mix. But for the fist planting you ever do, I'd reccommed a fall planting of Cereal Rye. The rye is an annual, that produces High amounts of carbohydrates in the fall, and is inexpensive, and very forgiving to first time planters, as far as Ph goes. Rye also, inhibits weed growth, and has a large root system that will help the soil for the next fall's clover planting.

WIth Rye, you want a fall planting. The field will be a very good attractant, and will be cheap to plant. If you get good results from the deer, (I expect you will), then you can prepare the plot the next fall with a clover planting. With a succesful planting under your belt, clover will be less intimadating.

If you need more info, let us know.