You'll need seeds that can in fact finish before first frost in your area.
It's good you're going to grow away from your family's property, that's a good start, respectable.
You'll want to go scout that the soil is good, and drains well, and look at the trees and plants around there. If you're going to amend the soil, fall is a GOOD time to do it, but watch out that it IS hunting season and you need to wear orange if you're wandering around the woods... not a good combination, orange vest and big bag of compost...
Be safe, good luck.