Yeah, the MSF courses are great, the two ladies that taught the one I went to were very good at it. We had mostly Honda CB250's (I think that's right), 2 250cc cruisers, can't remember what make, a 250 Ninja, and a dual-sport, so you could maybe have something close to what you owned.
Yeah, the leather isn't bad when you're moving, if there's enough vents in it, but it's like a sauna when you're stopped. I need to get one of those mesh ones. Are you required to wear an actual jacket for your class, or just long sleeves? Ours was the latter, I just wore a light long sleeve shirt, since it was flirting with 100 degrees when I took mine last June.
Glad you're enjoying the course, good luck on the 2nd day!