Tree Style Tabs are nice. I also have it set up so the URL bar doesn't include search -- and the search bar is separate. This makes it easier to get to the right place by starting to type a url in the url bar. I often just type one letter and then press enter, and voila, I'm where I want to be. It "learns" over time what you're typing in.
Also, of course, you should install uBlock Origin.
May I ask what you did to configure your browser that way (extensions/settings)? I like the look of it, and looking for ways to customize my setup.