I do 76F in the summer for AC and 68F in the winter for heating. Try to use minimal heating and air and still maintain a comfortable range. Can get expensive if working the system too hard. If it wasn’t a matter of cost I’d leave it on 72F all the time.
Evaporative coolers are great if you live where you can use one, much cheaper to run and they can work pretty good as long as humidity isn’t too high. I had one in a house I lived in before along with a regular AC system. It was a good to have and saved a lot on the electric bill. If it was dry enough out the AC unit was not needed.
Haven’t used a heat pump before and don’t know much about them. If they work as well and cost less to operate that would be a good option, but I wouldn’t use one if it’s a downgrade in performance. Rather pay for the comfort.