Where are you staying?
I would say that if you let ME take you and your bags to your hotel, you should arrive at your hotel around 945-10. If check-in is short, do it. If it is long, hop a bus to MK and boat/monorail over. I think you will be fine, but any glitch 15 - 20 minutes might put you a little close for comfort (long wait at DME, last resort dropped off, just missed the MK bus, long wait for monorail or boat, etc.)