@cgeyik I think learning to solder would be the easiest option. As the case comes, the power/reset are hard wired into the power in and all current flows through both buttons. I just cut the traces to the switches, which isolated them from the power circuit and allows them to be used for other purposes, and soldered power in directly to the pins that go to the pi. So eventually you’ll have to solder something to the power in. I did a whole rundown of my build in a couple threads.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first