Become a pilot BY going to college.
A program like TSTC in Waco TX will allow you to earn all ratings up to CFI (Private, Commercial, Instrument rated, and CFI), AND awards a Associate of Applied Science that transfers to any "4 year" school. If you finish your flying on time, you graduate at around 18 months.
Transfer that 2 year degree to a University with an aviation program, and you could pursue an aviation (or non-aviation - my recommendation) degree AND flight instruct on the side.
As mentioned by LA, if the school has a ROTC program, pursue that because there is no commitment until after you graduate and sign the papers. ROTC is a no risk option that CAN open doors for you to the military.
At the end of 4 years, you have flight training, 2 degrees, flight time from instructing, and the potential option of going to either the military or regional airlines.
It's a full plate for sure, if you want to party a bunch in college I wouldn't bother with this path.
www.pilotcollege.com/