I'm a single founder who was raised angel and venture capital. If your business is compelling enough, you could raise angel funding. But there is little chance you can raise venture funding without a team in-place. It's a negative signal to institutional investors that you haven't been able to lock down a committed team.

That said, depending on the nature of your product and traction, it sounds like you might be past the stage of recruiting a cofounder and more into hiring a great team of employees. The differentiation being less title and more the amount of equity.

It sounds like you are selling a physical product so the question is whether you have built the capacity to scale. If not, the importance of having someone on your team who has done that at scale, even at the angel level of funding, could be helpful if not required.

Happy to do a quick call and give you more contextual advice.