You have conviction. You need someone who's built it before to tell you if you're right.

The first architecture decision is the one that costs you later.

Most founders make three expensive technical mistakes before their first engineering hire. They choose an architecture that won't survive growth. They hire their first engineer without a senior benchmark to measure against. They walk into a technical investor meeting without confident answers to basic infrastructure questions. None of these are irreversible. They are all much cheaper to get right the first time.