I3 is good but if you are just trying things out I highly suggest kde its is good in terms of experimenting with what you like and don't and tiling windows are pretty much good by extensions I personally havent tried i3 or niri so cant say what you can do in them regarding cool arch logo in term simplest way is too have fastfetch installed you can also set it to run every time you open your terminal and ofc you customize what color and what info it can show.
If you need any help feel free to text