Aye, you're basically describing a Studio.Then I guess that's what the mac studio is for.
See aboveI feel like I will still need a dock for the SD card slot and add more ports too since at least 1 port at the back will be taken up by external storage (likely 3), I also need to plug in my mechanical keyboard, external speakers, WiFi dongle for controllers.

You know you want one! (but wedding, etc, I get it).