Buddy wants a steam machine

What the title says. He is looking into getting the 2 tb version once it is available. He is only looking to game on it. His reasoning is he believes it will be cheaper than buying a pc so I “built” one using micro center since we have one local. Anything yall would change or add before I try to sell him on this instead?

https://www.microcenter.com/site/content/custom-pc-builder-amd.aspx?load=64dd5dc6-390b-4cd5-95f1-28c6b122fa40