In my experience, it's a mistake to choose a language or technology stack based on who you think you'll be able to hire. Hiring a good dev who is passionate about your particular product is oodles harder than either rewriting your code (assuming it's at the single-developer stage) or learning a new language. Hire the best candidate, regardless of whether they know the language your software is written in.

And then write your software in whatever language you are most familiar, so you can get it off the ground. You won't be able to hire at all if there's no product.

Depending on what problems you're trying to solve I think you'll find developers have very little problem learning Go. People coming from Python or Ruby might have a difficult time at first but anyone coming from C or C++ will be able to jump in quickly.