Asking your potential co-founder to quit their full time job as a first thing in your zero customer startup is the biggest Red Flag of OP as a Co-Founder. That is too selfish.
It can be better! Potential co-founder asked me to bring my own 9000€ for company’s registration (in Germany). I didn’t. A year later the company ditched all hardware and went software only. I dodged a bullet as a hardware developer as I see it today.