Hi guys! I pre-ordered the original iPad 3G 32GB before launch and have been using the unlimited data plan. I have already ordered the iPad 2, but it's still quite a ways away (i just ordered 2 days ago, and has 4-5 week wait). I would like to sell my iPad asap to get best value. what would be the best way to do this while keeping my unlimited data plan? there might be a month gap before i actually get my new iPad. is this even possible? if i change out the SIM card with a brand new one, would that work?