I would not pick VGF or PBV for the monorail options. VGF has 1 elevator and it's slow and small. I have a hard time maneuvering my double stroller. That's the elevator to get to the 2nd floor where the monorail is. PBV is similar, though they have 2 elevators. But the rooms seems like a hike to the main building. I guess if you're really far, you can go over to TTC.
And we really don't like taking the monorail to EPCOT. The walk is pretty laborious, while pushing 2 kids, going on and off the monorail ramps. I don't know if they'd let
ECV take the short cut, but don't count on it. The last few times we've just taken the bus from Epcot back to our MK resort.