I prefer doing it in HG because of free vitamins and the ability to check EVs, which keeps me from accidentally messing it up. But don't worry, I EV my stuff in BW all the time and could do that for you too.
You can PM me your list when it's finished, and I could begin (and probably finish, who knows) tomorrow. I'm EVing some stuff of my own right now!
Well, I'm always in need of EV training. So, I'd be happy to send some over to you in exchange for credits/whatever in my thread. I'll come up with a list stuff I need EV trained. Can you EV train in BW, too?