Welcome Area OnlyNew Member Welcome Area Only. Be sure to pop in here and introduce yourself & let us know what Harley Davidson you own. Save your bike related questions for the proper area.
At your size you will fit any of the bikes, but be a bit cramped on some of the Sportsters. I would wait until after your class to look into buying anything. That way you will have at least a little experience on what feels right. The other thing is that your first bike will not be your only bike. Buy something that you can get some experience on and see what type of rider you will be and what you want.