Very difficult to attempt to answer these questions but here goes... so a max effort of 86 in high school means you're sitting 81-84 or 82-85 or lower - most guys with those numbers will never hit 90 consistently if ever (though there are always the exceptions). I would suggest if you want to pitch at your junior college or a D3 that you start working on secondary pitches more than getting a 90 mph FB. Good secondary pitches and a high 80s fastball should be good enough for many JCs and D2 or D3s. Just 90 velo is definitely not the end all and be all. But hey, if you get there then you have good secondary stuff AND a 90 mph FB. Good luck.