projector with 120” or more screen with 4 TVs (two 55” TVs to the right of the screen and two 55” TVs to the left). Obviously you’ll need 5 receivers for this and you’ll need a speaker set up and audio receiver. You’ll want a decent tower for your electronics.
Some reclining theater chairs and a couple couches for seating. A bar. A golf simulator. And a pool table.
That should cover it. Makes for a great time watching sports with friends.