Don't limit yourself by just wanting to fly a fighter, ESPECIALLY when you don't have any experience to really back that desire up with -- I've seen many a student in SUPT show up on day 1 SWEARING they'll never go for anything less than a fighter...only to select T-1s 5 months later because the formation/low level/etc isn't their style.

MORE IMPORTANTLY: Deal with the "near rocks" before you even worry about the "far rocks": There are a LOT of very high hurdles to get over before you even start thinking about what kind of aircraft you want to fly.

Graduate with a GPA good enough to go to a University or Military Academy. Be a well-rounded student with both athletics and academics.

If you get to an Academy, then the path to pilot training will be well laid out for you. If you go to ROTC or OTS, then there will be a little more work to do.