It's cute, but I say: why the lack of ambition? Make it: from the transistor to the LLM, in 13 weeks. Week 13 is for building a GPU, learning linear algebra, creating a large text corpus, implementing tensor flow, and training the model. Optionally an extra day for building a company around it, getting it funded and the IPO.

Or: it's rather unlikely someone untrained can build an OS from scratch in 3 weeks, let alone an OS plus an MMU, a driver, a file system and the basic command line.

Yeah, this is super weird. Just saying this is only one part of one section that "takes" 1 week:

  Building an FPGA board -- Board design, FPGA BGA reflow, FPGA flash, a 50mhz clock, a USB JTAG port and flasher(no special hardware, a little cypress usb mcu to do jtag), a few leds, a reset button, a serial port(USB-FTDI) also powering via USB, an sd card, expansion connector(ide cable?), and an ethernet port. Optional, expansion board, host USB port, NTSC TV out, an ISA port, and PS/2 connector on the board to taunt you. We provide a toaster oven and a multimeter thermometer to do reflow.

You could spend weeks or months on board design. Or days just on reflow (or even more if you've never done any soldering).

2 word answer: George Hotz