I like those house names except for Florifun, haha. I particularly like foxglove but maybe thats just because it reminds me of foxhound. :P Also, I might change some of the symbols/mascots. One or two of them could use something more magical/mystical/mythical. :) 

I also agree that we can keep it open for players to be professors or students. That way, if someone has a cool idea for a class that isnt normally in the Hogwarts curriculum, they can play the professor who teaches it if they so please. After the initial applications, we can create some NPC professors and, if a new player comes along, we can have the professor leave and a new professor (the new player) come in.