Trying too hard

This week I have been trying to plan a family routine. It is not working. When you write it all down one of two things happens, 1- it looks like very little needs to be done or 2- it looks like too much needs to be done! It also seems much too easy to underestimate how long tasks will take to complete- add a toddler in the middle of toilet training and a pre schooler who is able to create total destruction in half a second and my routine might as well look like this:
7am- Wake up
7.02am- Breakfast chaos
7.30am- Clean up while chaos happens in another room
7.45am- tackle chaos known as the kitchen
- mop up pee puddle
- more chaos
Blah blah blah

Our toy room, the hub of chaos!

I think I am trying too hard to line up my day in a nice neat row. Perhaps a list of a few things that need to be done in a day, minus the scheduling, would be better.
How do you manage to run a house hold and get it all done? And what do you let slide?