pgBouncer w/ read replica

Hello. I want to distribute load equally between my read replica and my primary database. Is it possible to use the render pgBouncer blueprint to do this?

FWIW, my application has a relatively tiny read-only database. I only need 1GB of RAM and modest CPU but want to scale up to many databases. I gather that with Render the best I could hope for is a two node cluster.

Thank you