I would suggest taking at least one soil sample that is a composite of all 3 sites. It is risky to try to grow perennials (clover, alfalfa, etc.) without knowing the soil you have. Throw and grow has a lot of rye grass. Rye grass (as opposed to winter rye) makes a pretty lawn, but a poor food plot.
This weekend, spray the heck out of the area you want to plant with 2 qt/a 41% roundup (buy any generic weed killer with 41% plus glyphosate, provided it isn't "season long control"). You can take a soil sample if you are so inclined.
Last weekend of August, buy 100 lbs per acre winter rye, and 1 bag urea (50 lbs, 46-0-0) per acre. Rake up the soil as best you can, and spread the seed and fertilizer. If you can drag something light (chain link fence, small log) behind an ATV after planting, even better.
Pray for rain.
This is about as simple as it can get, and you should get good results with a little rain.