MPSM PCBA cantilever support

I am rebuilding my Monoprice Select Mini with the 4th Dimension Modification extended bed and extended height side panels. I have a Meanwell 150W (LRS-150-12) power supply inside the new extended height base. The extended height base intends you to use the stock bottom panel to mount the Printer Control board, but that strikes me as cantankerous, so I am leaving the bottom panel out.

Therefore, I needed a way to mount the main board without the stock bottom plate. I was not in the mood remove the components (power supply, C14 switch/jack, and SSR) in order to drill the base, so I made a bracket that can ziptie to the power supply.

My first version held the PCBA above the level of the top of the power supply. IT will fit there with the extended 4DM sides, but there's not much room left for fan airflow. So I redesigned the bracket to lower the PCBA down to the floor and renamed it "lowboy", like the trailers that carry heavy construction equipment that my son is interested in.