Definitely do not buy the Wintel. Wireless and bluetooth is not working, there's random crashes and the BIOS is very buggy. If you want a cheap device, the Tronsmart Ara X5 Plus works good. It has minor issues as well but wifi/BT works and it's a lot more stable than the Wintel.
If you want a real upgrade, get a NUC.
Thanks for the heads up I've just installed your build on my old Lenovo x201 i7 Any tips on what usb bt 4 adapter to buy to connect the DS4 that's supported?