Here is one of the sites favorites the Dbltree mix is as follows. The winter peas and radish are an option. Next Year trim you're standing cereal grains and you will have a nice clover plot if all works out. You will need to have the ability to mow your clover.
Cereal Grain combo in 45% of plot...we use 50# each rye, oats and peas along with radish and clover seed all planted in half of each feeding area
Winter rye 50-80#'s per acre (56#'s = a bushel)
Spring oats 50-120#'s per acre (32#'s = a bushel)
Frostmaster Winter Peas or 4010/6040 Forage peas 20-80#'s per acre
Red Clover 8-12#'s per acre or white clover at 6#'s per acre (or 20-40 pounds hairy vetch and 20-30#'s crimson clover on sandy soils)
Groundhog Forage Radish 5#'s per acre
Plant in late August to early September, if following well fertilized brassicas use 100 - 200#'s of urea, if starting a new plot add 400#'s of 6-28-28 but for best results soil test and add only what is necessary.
Here what next year looks like mowing the standing cereal grains.
Couple week later mowing the lush clover.