Yes, the moving the luggage is the easiest part. I actually had bell services move my luggage to a hotel I was having dinner at before leaving for the airport. Just telll bell services the hotel, and the luggage will arrive there mid-afternoon.
Since you won't get a room until 3pm, the best thing to do is take Disney transportation to tour for a few hours, and when you leave the park, or Downtown Disney, or whatever, take Poly transportation and then check-in. Your luggage should be waiting.