Used a power only micro USB cord that already had a pigtail end, solder a 2 pin piece of header to it and covered it with 3 coats of liquid black tape using a toothpick. Plugged it into the 5V GND connection on the Hacker Header and it works like a charm without having to solder or hack something and void any warranty.
Instead of fiddling with the 4 pieces of tubing to mount the Pi I 3D printed a base for it as well as a mount for the SSD and covers for two speakers. All I have left is to design and print a cap to cover the hole on top with holes to run the speaker wires and mount the amp module. Software is still a bit dodgy, none of the Retroarch stuff in RetroPie has been updated to the latest version with the emulators tweaked for the Pi 4 and I don’t see an update coming from them anytime soon so I’ll probably set up Lakka on another SD card then I can just swap them out and compare. That’s why I like storing the games on a separate drive, transferring ROMs and artwork to the SD card was always the most time consuming part of the process plus you have the ability to edit games and data from a PC where it’s a lot faster than over a network