You should definitely do this! This will put you 2+ years ahead of people waiting to build their time after college. This is exactly what Id do if i did it over again.

If you're going to a 4 year school and need to build 1,250 hours over that time span, you'll only need to average 26 flight hours per month. That is completely doable and will be a nice way to earn money on the side as you're in school. The main thing you will need to do is go to a school thats located in an area where you'll be able to find a job as a part time instructor. That shouldn't be hard to find because everyone is desperate for instructors.

Also remember that 26 hours is the average per month. During your winter and summer breaks you'll be able to fly much more and could even build all the hours you need for the year over that period.

Good Luck,
- Dillon