What are you planning to plant in that spot?

The area will be used for growing vegetables.

Rye might work if you have a tiller. Otherwise it can be hard to dig in. Due to the cool climate here raised beds and surrounding shrubbery (to cut the wind) are also good features to have in a vegetable area. A friend who raises his own crops throughout the year north of Seattle uses plastic tunnels and raised beds located in a fenced yard south of a house. He also has a setup for melons where a pipe sucks in air at the top of the tunnel and blows it through the soil to the other end. Right now it is cooling the tunnel, which is covered even now. At other times it warms the tunnel. He is currently picking and eating his own watermelons.

Sounds like you've got a great start. Remember Mother Nature allows for a lot of tolerance, so don't worry about perfection. You have organic material & manure in a prepared bed - your veg will love it.

ESSENTIAL BOOK! Steve Solomon's Growing Vegetables West of the Cascades. Wonderful book! You can apply his advice religiously and GROW like a master, or you can follow it generally and have a great and satisfying garden that feeds you well.

People have different fertilizer mixes they like to use; I have used chicken manure for N, bone meal for P, and wood ashes for K, plus lime in the veg garden except in areas where I'll grow plants that don't like lime.

I usually spread this over the top of my raised beds and turn it under in the spring. Then I'll spray liquid fish fertilizer or liquid kelp two or three times during the summer. If I have it I use chicken manure tea instead, also a few times during the summer - but not on the leaf crops!

You could lime, bone meal and woodash over your bed in the fall to soak in through winter, then spread manure in early spring (Nitrogen percolates through the soil faster than the other two). One of them - I forget which potassium or phosphorous, only penetrates an inch or so per year, if you're doing no-till gardening, so that's why I turn mine under. I suppose after enough years you can just let the rain do the work.

If you want a cover crop go to Territorial Seed website - they've got several in small packets for the home gardener and lots of information to help you choose which would be best for you.

I just cover my beds with a mulch of alfalfa hay for the winter and find that the beds stay soft and the worms are fat and wiggly by spring, with only a thin sprinkling of hay that's still recognizable.