Lots of great comments. In my late 20s I helped consolidate two plants (close a plant) because I had finish my bachelors degree, gotten some MSFT certifications and was 'out the door' already. The company was grateful for what I could do for them over those final months. I worked hard to make sure they were set up and eventually said my good byes at the new place. The working mood for me was very different and stress was much less because I knew it was ending and I had a plan. Working in that state of mind is very different than the regular grind it out because you have to mentality. It sounds like you want to stay on. Four days a week is nice. The extra money would be nice too, hopefully it's significant. Another two years...kind of a long time. Tough call. Good luck!