Many of the best YC companies have had phenomenally small number of employees for their first year, sometimes none besides the founders.

Unpopular but right is what you're going for.

You don't need to make the structure complicated, in fact you shouldn't. All you need is for every employee to know who their manager is.

AirBnB spent 5 months interviewing their first employee, before they hired someone and in their first year, they only hired 2 people.

Startups are very hard no matter what you do; you may as well go after a big opportunity.

If someone is choosing between joining McKinsey or your startup it's very unlikely they're going to work out at the startup.

More important than starting any startup, is getting to know a lot of potential co-founders.