When doing an AG brew I like to use an electric time switch to turn my hot water tank on.
It means I can go out into the garage and the water will be at mash temp straight away.

I usually set it to come on at 7am, and start mashing at 8-8.30.

So I will have treated my water the night before and left it in the boiler overnight.
I also weigh my grain out the night before and weigh hops which I put into plastic tupper ware boxes and label with times.

I find this helps the brew day go much smoother.