Shundaroni ...
I grew up in that area of lexington. All of those roads are fine to ride on. I started riding on harrodsburg when i was twelve. grit your teeth and do it for a week, and you'll never think twice after that.
In any case, why wouldn't you just live next to the school? tons of cheap, good, apartments all over that area.
by the way, i wholeheartedly recommend schellers (spelling?) bike shop on woodland. it's close to UK, and you can get the best cheeseburger in town across the street at Ramsey's. good luck in school