You could add my app to this post aswell, since mine's the only one that can transfer GenIV pokemons to GenV as far as I know. And it's pretty straight forward as well so it's probably the easiest to use for people who just want to send a couple of pokemons to their carts.
Just a suggestion though, it's your post ^^
But I think it's a great idea that you made this, some people seem to have a lot of trouble getting GTS servers to work.