Looking for the combined experience of fellow commuters when it comes to gearing strategies.

On Flats:
I usually cruise with largest chainring (48t) and 2 smallest rear sprockets.

Heading towards a moderate hill:
Shift up the rear sprockets at base of the hill. Up to about maybe the 3rd largest sprocket depending on incline.
If I run out of breath I would gear down to the 2nd chainring.

Plateau and down:
Shift the to the small sprockets (as long as my legs are ok) to maintain cadence. Once at plateau, I get ready for the downward speed by getting up to the largest chainring again.

I've tried in the past to mash the power gears, but I then realised that there's a reason for all the gears. Now it's about maintaining my cadence as smooth as possible.

Would love to know if there are other strategies that I can learn from too.