This is what I would recommend for you for what you are looking for. If you are looking to upgrade to a custom liquid cooled loop in the future, you would need a different case.
This is, of course, based on some of my personal preferences with brands that I have used in my computer builds. If you want to go with a triple monitor setup over a single large monitor, I could recommend a monitor for you to use. I've never used 3 monitors, but it looks like a lot of fun for games. If you have any questions about my choices, let me know.