As a rather sweaty person myself, I'm not sure I understand why you're having such a large problem dealing with sweat. I ride six miles to school with either wool or athletic polyester clothing and a backpack. When I arrive I am usually sweating, but within five to ten minutes of getting off my bike, I'm well on my way to being dry. I don't have an issue with going into class wearing an athletic shirt or a wool sweater, and I seldom smell even if I'm still a little bit sweaty.

I say to just dress light, ride a reasonable pace, and keep your clothes on when you arrive and let the sweat evaporate. That's the point of sweat, and also the point of wearing clothing that wicks away moisture.