Yeah, I'll be teaching the photography class Wednesday. It will be pretty basic topics though. It's interesting to think about what I know and that people will listen to what I have to say
I'm a little ashamed to say that I haven't made any sample prints on DA to know the quality differences. The "photo" print version should be the cheapest for a large format, but will need the expense of a frame later on. And with buying a frame outside of DA, the total cost will likely be less than buying a framed "art print" or "canvas" on DA.
I hope that helps and let me know if you have further questions.