Equity discussion

Hi all - My cofounder and I have built a strong MVP and have confirmed a strong market fit. We are a month away from our officially launch, and we are bringing on a third person to help with ironing out the launch, front end, and a small integration. He’s a good friend of mine and refuses to get paid till we make profit. I want him to feel like he’s truly a part of our company though. How do you identify how much equity is enough, and how do you build out a pay structure when there’s no current revenue? We have been toying with offering 1-2% equity. Any feedback would be helpful. Thank you!