if your still here, this is sounding great. i teach as a means of getting enough money one day to open up a FALGS (Fucking Awesome Local Gaming Store), and as my wife has also always wanted to open a Nerd Shop, looks like thats the plan.
some advise i have heard:
1- don't make money straight away, invest the money from the shop back into the shop. dont skim money from the buisness, make sure you have another form of income for the first year or so of business. this is not because you anre going to go bankrupt, but because it builds up your assets.
2- Make everyone feel special. "hey, whats that? you are in a collage RPG club? show me your card and i'll give you X% of something!" shit like that.
3- know the games you stock. all of them. if you dont know the game, open one up as a store copy and play the damn thing so when i come into your shop and have an interesting story about my tier 5 unicorn telepath you can say, "wow, thats a cool character. he doesn't afraid of anything."
4- ITS NOT A FRIENDS CLUB. all of my LGS's (note i didn't say friendly) owners treat the store like a private club house, to the exlusion of their customers. i no longer go there.