Hi Scummy, I can tell you what I'm doing it doesn't work all the time but its survivable iykwim, I can't leave the newt to cry either and the dillemma of which child to run to is too much.
This is what I do every night...
Packed lunches are made up and put in the fridge, ( make one for yourself too)
Book bags are filled with all the appropriate things and put on a high hook so they don't get messed with.
shoes and coats are placed where the kids can reach them.
Put breakfast cereal in bowls and put on the table in the right place for each child. cover with a plate and put out spoons and cups.
Soo, I wake up at 6.30am give newt 30min feed get up at 7am give kids a shake and a bit of help getting dressed.
We all have breakfast together, you can poor milk/ juice and make tea one handed if you need too.
Then its faces, teeth, shoes and brush hair, put on shoes and coats and walk out door.
All children do everything at the same time. The idea is to be ready early enough so that if I need to sit down for 30mins before we leave the house or at any point in the routine, things still flow and we still have time.
The list of dressed -b/fast - faces/teeth/-shoes - hair. Is on the wall and the kids give themselves star stickers for each thing done. Older ones helping younger. Get your stickers for a week without any crossed words or silliness and you get a treat.
I can remember how old your boys are ()but my oldest is 5 and its working.
I don't try to do anything else in the get ready for school section of my day, I do other stuff when I get back.
Same kind of thing for the after school manic section of the day, I try to get potatoes chopped and in the pan or If meat needs dicing I try to do it before I pick the dcs up.
It still doesn't always work perfectly of course, there are days when everything just happens to work on time and days when the timing is off for everything. but being prepared the night before deffo helps me in the mornings...
Hope that helps somehow