all i could add is definitely talk to as many teachers as you can about the work and even sit in on some classes if you can beforehand. i'm kind of one of those failed teachers. I went for English 6-12. i got straight As in my core courses, yet wasn't prepared in any way for student teaching. it was up at 6 to finish up the day's work, skip breakfast, skip lunch, home at 6:30, dinner, then work until 2 am. still, it seemed like i never got caught up with the work i had to do. took Friday night off, but worked all of Saturday and Sunday. it was just too much. the stress led me to hate the work, do poorly, and my consequently my supervising teachers weren't that sad to see me leave, either. i got caught up in the ideology of my professors and thought it would be different. plus i hate to think of taking out a student loan and then trying to pay it off with a job that pays $28K a year. call me negative, i know. ever thought about editorial work? that's what i do now. that might also fit the sort of thing you're looking for. it can be fun work, but then i also wouldn't completely fill you with sunshine for that industry, either.