Build vs. buy your admin panel during YC
Disclaimer: I'm the founder of Forest Admin (https://www.forestadmin.com) and we provide a SaaS admin panel solution.
3 months at Y Combinator is a short amount of time to build both a customer facing app as well as the admin panel that will support your business at scale. Who would prefer relying on an off-the-shelf (or low code) solution to save time?