Actually, I think Pokemon sent from your 3DS won't be shown on the same 3DS - the Pokemon is based on it's friend code.
I read it somewhere, but I'm pretty sure I'm right.
EDIT: "I called Nintendo on this, and they said no, you can NOT trade to yourself on the same DS machine over the GTS. Part of your pal code is the MAC address of your DS, and it will not let you trade with yourself on the same DS. You would have to have a second DS, and if you did, you wouldn't use the GTS to trade."
Obviously Nintendo have tried to prevent it, but now I'm looking over the internet and now I'm wrong. Sorry. xD