Sounds about right.
I too was worried about transportation time before staying there. Everyone makes it out to be so far away you'd think it was in the heart of Africa. I was pleasantly surprised by how much faster and efficient the bus service was to and from parks. The ride to MK was around 15-20 min. The ride to Epcot and DHS was around 10 min, and to get to AK was only about 5 min. The extra time you have to factor in is waiting for the bus, which we've had good bus service there.