Bounced around between a few setups, but happy and productive with a single 1080 and a Lenovo Legion laptop monitor.

I had a third monitor at one point, but it was pretty poor quality so I let it go. Can't say I really miss having three.

The laptop is my point of focus, I'll have reference materials on the screen above it when I need them.

If I had money and wasn't about to move country, I'd go for a nice big main monitor and relegate the laptop to secondary. Maybe next year.