Nice. What would make this really amazing if was also fully emulated (using some basic robotic kit for the tape drives and, say, a Raspberry Pi). Myself, I was thinking about maybe making a paper miniature of IBM System/360 running on Hercules.
The Computer History Museum in Mountain View, CA does demos of the real 1401 (at least until the coronavirus hit), so once things open up again, anyone who is nearby should check it out.