I often batch make lots of stuff for packed lunches that can be easily frozen then just taken out in the morning and it's defrosted by lunchtime. It acts as an ice pack too.
Sandwiches with sliced cheese or any deli meat (sliced ham, turkey, beef etc) work really well for this. As do things like mini quiches baked in cupcake cases. I then tend to add some popcorn or crisps, carrot sticks and a piece of fruit.
Or sometimes I'll batch make a big pasta salad and they'll have that in their lunch box for a couple of days. Tuna, mayo and sweetcorn is really easy.
Uniform is set out the night before, hung over the radiator in each child's bedroom. Shoes, coats and bags live by the front door. We have a box under the stairs that has sun cream and summer hats in the nicer weather then I swap it for gloves and wooly hats when it's colder.
I live by alarms in the morning. We have one for "must get ready now" and another for "have to leave the house in 5 minutes". DDs are not allowed downstairs until they've brushed their teeth, got their uniform on and tidied their bedroom. If I have time in the morning I'll make a big batch of porridge and store extra in the fridge so it can just be microwaved and be a quick breakfast for the next few days. Otherwise on school days it is quick breakfasts only.... usually Weetabix or yoghurt and fruit.
In terms of bedding each bed has two sets and I will do them on separate days but I always strip the bed and then immediately put the spare set on so I'm never rushing to get it all washed and dried in a day.