Personally, i wouldnt quit school, maybe dont take as many classes, but dont quit... even if you plan to do it later... if you atleast get an aa or your generals done, it will be so much easier for you to go back and do the "fun" stuff...
im in college right now, i would love to drop out and breed snakes, but an AA in graphic design opens so many more doors for me than breeding snakes and doing freelance work without a degree... get my point? if you go and get an AA, you'll be what, 20? breed snakes on the side. seriously think about whether you want to quit school...
as for the snakes, time wise... 15 breedable females is not all that much more time than what you have now... - sin yes - but if you werent on here as much that gives you that bit more time...what exactly were you planning on getting a degree in?