I would imagine that if property that you are speaking of is undeveloped, then you may be in a rural area just on the outskirts of Mission Ranch. If that is the case, then you would be looking at a much more broad range of demographics.
There you will find home buyers looking at a variety of uses for the property, from low entry level home to horse property.
Dependent upon the exact location, I can assist you with the specifics of the area. I also have a client that has been looking for a special use home in the area and that may be the perfect client for a custom build for you.
Please contact me directly and I help you though the specifics of the neighborhoods so that you can determine your best scenario.
I would go to the planning department, check to see what type of development is in the works for the area. Usually that has a lot to do with who would be attracted to the area. The surroundings, what is there and what is coming all will make a difference. If the area has only smaller homes and work availability for blue collar workers than that would be your target.