It's a bit longer now from the IG to HS because of the construction, but not too bad. And the new path dumps you out into the HS parking lot. Also keep in mind if you cut through the pool area of the BW that will cut some time down on the walk. Probably about 20 minutes with the construction.
We are going to EPCOT for NYE this year too. We booked last minute, last month, but we got a great deal at the Dolphin. We too didn't want to deal with the buses / traffic.