I happened to stumble across this and though I'm not much of a gardener (yet), I would be thrilled to have an opportunity like this. If it were me, I'd divide the area into two approx. 1/4 acre sections:
First Section- A small orchard of several fruit trees. The trees could eventually hide the view of the neighbors.
Second Section- A series of raised beds for various crops and flowers (maybe even a couple of cold frames, depending on your climate, if you want to extend the growing season). I'd not only surround each raised bed with some sort of netting/fencing, but I'd surround the whole section with some sort of fencing as well. This would deter critters from eating crops, including... Chickens! I'd add a chicken coop somewhere in "garden section" and since it'd be fenced in, I'd use it as their run (you could have an additional run attached to their coop if you wanted). They'd be able to forage around without totally destroying your crops and likely eat any weeds that come up in the little pathways between the raised beds, basically turning them into dirt paths. They'd also add valuable manure for your gardens, and you'd get to enjoy their eggs (or sell them). And if you're really ambitious, add a couple bee hives!
Anyway, this is me getting carried away... Full sun and open land is a treasure! Enjoy whatever you do with it and keep us posted.