Most of the best hires that I've made in my entire life have never done that thing before.
Remember that the idea will expand, and become more ambitious as you go.
It takes years and years, usually a decade, to create a great startup.
You can win with the best product, the best price, or the best experience.
Long term thinking is so rare anywhere, but especially in startups. This is a huge advantage if you do it.
Most great companies in tech have been built by personal referrals for the first...at least 100 employees and often many more.