I would check the bus route first.
Sometimes the resort bus lets you off at the TTC instead of MK. If that's the case then it's a short walk to Poly from there.
Otherwise, I love the monorail so I would take a bus to EPCOT, board the monorail and get off at TTC. Walk to Poly. That is if you want to
budget that much time gettting to the Poly.