747- sorry but i have to say it. THATS NEVER GOING TO HAPPEN. it sounds to me like your jumping the gun a little bit. i take it your still in high school. you seem to have your choices already narrowed down to three places. have you taken a tour of any of them? do you know anyone who has attended these schools personally? if the answer is no to both, you need slow down a little. here are my suggestions.
1. GO TO COLLEGE! you can major in aviation if you want. many universities have flight programs.
2. GO TO COLLEGE! major in something other than aviation and work on ratings in your spare time.
3. GO TO COLLEGE! Choose a flight school after you have graduated and after you have had time to do more research on the various flight schools.
4. DON'T BE FOOLED by the flashey ads you see in flying magazines. many places "gurantee" an interview for graduates. that is if you graduate AND get hired on as flight instructor with them. i know that two of the schools you have mentioned -Flight Safety, and PAN AM have considerable wait lists to instruct. so, if you attended one of these schools right now, and assuming your hired as an instructor (no guarantee) you'll have to wait in line. that could take anywhere from a couple of months to a year. who knows. my point is you don't need to be in a rush right now. i have a feeling you'd be in the minority at any of thses schools without a college degree of some kind. there are many many other reputable flight schools out there other than the ones you have mentioned. take some time, and do some more research. don't limit yourself so soon. good luck