I'm new to this, but I have decided to make my own Computers and

I'm using, qemu (Full System Emulation), gem5 (Full System Simulation),

They're Configured and Built from Source Code on GitHub.

Any tips, comments, concerns?

Hi everyone, I'm new to this, but I have decided to make my own Computers and Cellulars. I've got enough knowledge in Computer Science. I'm using, qemu (Full System Emulation), gem5 (Full System Simulation), kicad (Schematics: Boards) (Layouts: Components). They're Configured and Built from Source Code on GitHub. Any tips, comments, concerns?