I'm looking to building an incredible pc and wanna hit over 120hz at 4k (if that's possible). I'm somewhat new to building pcs and want to know what either a bare minimum requirements would look like for a pc to handle this and what sitting comfortably would look like. I'm assuming an Intel I9 9900k would be needed and a RTX 2080 Ti, maybe even two? Where my lack of knowledge starts is which motherboards I should be looking at. I'm assuming I need a rather large case to hold everything and would like to stay away from liquid cooled if possible (unless someone can recommend and easy guide on how to do it). I would love to upload pictures as I start to build this future beast, but just need a little guidance on things I should look out for or specific things I need to buy.
Thank you all for the help and I cant wait to completely empty my bank account to just make things look a little more pretty!