I've never done
MDE but I've read you should allow at least 2 hours to get to the resort and get checked in. In theory your timing seems fine but there are so many factors involved it's hard to say. What if your flight is late leaving or late arriving? What if there is a huge pile up on the roads on the way to your resort. What if the bus has to stop at 4 stops before yours, all of which have families with babies who have to get those younguns into strollers and grabbed their 10 pieces of luggage themselves, thus said luggage is going to have to be unloaded from the bus before it goes to the next resort. What if the monorail breaks down on the way to MK (that one is unlikely since it leaves GP and the next stop is MK but hey we are playing what if) and it sits on the tracks for 1 hours after all of the above perfect storm happened. So, in theory, yes you should be o.k.