i would buy a Favero pedal. or 2.
It's hard to make these things accurate, at scale, reliably. That nexga thing has a million different interfaces, and that's just one pseudo brand that didnt exist last week. The probability things go wrong is so much higher than using an established product from an established manufacturer that has 1 or 2 SKUs. From experience, you want a power meter that's reliable. I wouldn't cheap out on that. It's incredibly irritating to have power meter issues.
There was even a Pogi interview where he straight up said he trained a lot with HR because his shimano PM was beyond useless.
