Never ridden the Skyliner, have not a clue how long this would take. Epcot opens at 10 on my date (for now). Will we have a chance at Rope Drop at the IG with this plan or will it be totally mobbed?
I would allow 90 minutes for breakfast and then up to 10 to figure your way to the SL station. The actual ride itself is less than 10 minutes. That would have you there around 930 at the latest probably.