We did this twice with Epcot-DHS and Epcot-MK.
The Epcot-DHS day I booked booked ILL's at 7 AM for Remy and RotR. I waited until 7:15 and booked a
Genie Plus LL for Slinky for 12:30 to 1:30. We rope dropped Epcot and I kept setting a timer for every 2 hours and kept stacking rides at DHS. We knew we were coming back to Epcot another day so we focused on half the park. We walked on Soarin, Land and Nemo then headed to France. We ate some pastries and then hit Remy. We then spent a couple of hours visiting the festival carts around world showcase. We hopped over to DHS at 2 PM and by that time we had ride after ride after ride queued up. The only thing that had me sweating was Smugglers run as I had picked ToT over that one and then it was listed as "not available" for most of the day. Some time late afternoon or early evening availability popped up for Smugglers run and we grabbed it. IIRC we ended up doing single rider line for RnRC.
Epcot-MK day I booked SDMT and Remy (again) at 7 AM. At 7:15 I booked a G+ LL for Jungle Cruise around 2:30. I was able to stack PP and all three mountains before we got to the park. We hopped over right at 2 PM, used our Jungle Cruise LL, watched HoP and then the parade. At some point after we got to MK I was able to book HM and PotC. Basically from about 3 PM on we had rides stacked back to back to back. I think we may have even cancelled 1 or 2 and re-booked for later because we had too many rides.
We definitely found that the best strategy for stacking and hopping to MK or DHS was to book an ILL and whatever the most coveted Genie Plus ride first thing in the morning for the evening park and then just keep going. We mostly used Molly's
youtube videos for tips on which rides to prioritize. Worked great for those two parks.
(absolutely a waste for AK and Epcot in our experience this trip)