I want to wish you luck with your farming efforts, but if the land is that steep and facing NW, you are going to be working against nature to cultivate anything but trees. You may be able to make some money cutting mature trees for lumber or selling logs for plywood or some craft using
wood, but I wouldn't advise expending a lot of time and effort on trying to grow veggies. Your mountain will block most of the sunlight and leave you with days too short for most food crops. Even a
greenhouse won't help much if it is shaded by trees all year.
I'm a certified
Permaculture Designer, and the first things I advise my clients who are buying land is: 1. south-facing gentle slope, 2. dependable
water source, 3. long
enough growing season, and 4. good soil. Soil can be built up over time. A
greenhouse or hoops can extend the season. Water can be trucked in or collected during rains. But, nothing can be done about building on the north side of a mountain. I'm sure you bought that parcel because it was inexpensive, and I completely understand that, but you may want to chalk this one up to
experience and look for something on the other side of the mountains. Homesteading an undeveloped plot is hard enough with good land, but it can be downright miserable on the wrong land.