Similar job. My solution was a single 4k monitor and Stage Manager. I can tile viewing a log and having a terminal open, and then just pop back to a browser when I need to. Plus, terminal can have tabs.

When monitors were 1024 by 768, I needed more than one monitor. Now that everything is designed to be one’s only window at 1920 by 1080, I need a 4k monitor. I imagine that when 4k becomes the default, I will need a 16k monitor.