But those are the entertaining ones innit. What fun is it to read a blog (like OP) that says 'yeah we hired a bunch of experienced professionals and we didn't have any problems'. No, we want to read stories of 'so I forgot about one detail and the manufacturer completely misunderstood us so I had to fly to China and spend 100k to get it fixed and it still was 3 months late'.
And employing all those people doesn't guarantee success, but it does guarantee your failures will cost a lot.
You'd probably want to only attempt making something like this as a vanity project, where it matters less if you fail, and thereby half the fun is navigating the path to success by yoursel[f/ves].
But, just for completeness sake, the list of people who got blindsided by the con artist who was ultimately behind a lot of the crazy included both our experienced local on-the-ground project manager and the factory owner.
Why did you go to China, as a two men shop? And not choosing a local company nearby?
And how much experience do both of you have on the hardware / manufacturing aide of things? And running global supply chains (because that's what you have, regardless of production volume)?