Hey, I'd like to EV train for you too. For references, I used to EV train for a lot of trade shops here but that was 2~ years ago since I had last wifi. Now I'm fully available again.
I can effectively EV train in Gen 4. I'd like to do it on Gen 5 when I get farther into the game. (First time playing Gen 5... recently got pokerus lol)
Oh I do have some great pokemon on my gen 4 but I only trade if I can get a clone back for them as I have no access to any of that.
And congrats on the opening of your shop!