You sound to have mixed feelings regarding going back to part time hours Phil ? Anyway I'm sure the plus-points are the reduced hours and as you point out the work-life balance !
All the best
My only mixed feelings are that it came a little sooner than I expected but no I am happy to revert back to part time. I intend to start off by working 10:00am till 2:30pm Monday, Tuesday, Thursday & Friday but as I mentioned, I now have complete flexibility so if I fancy an extra day off I can just take it and catch the hours up as and when I want.