I went to a "four year" (5 years) school and did not regret it one bit. I haven't used my degree (Civil Engineering) at all since graduating. But I also graduated without debt, despite that nearly crushing me. The thing I loved most about school was its ability to change how my mind solve problems and learned new things. That
experience cannot be substituted. That being said, I have no idea how to give advice to people about this kind of decision.
You are only young once, and there is something about being forced to be in school for 12 years prior that allows your mind to somehow think it's okay to be in school even more. It is not easy to go back to school when you are older, family members will need help,
chickens will need to be fed, all kinds of things conflict with a school schedule.
I think my advice would come down to two things:
1. Don't get into a serious amount of debt. It will force many important life decisions, decisions you will at the time not even consider a decision. It will just be a way of life for you, possibly for the rest of your life.
2. Don't bank on working in X career or making $Y salary dependent on your degree. The world is different now. You may increase your odds of working in X career or making $Y salary by getting a particular degree, but I see an equal chance of that happening if enough determination is focused in that direction, regardless of education.
I might also think less about "saving for enough to start homesteading" and more about making enough money to live and start homesteading on the side. Work towards homesteading more and working less over time. Even successful plans can be decimated by a drought, pest infestation, hail storm or livestock disease.