You won't need to balance the channels since they will only be used by you. The setup is designed so that you only need to open 1 or 2 channels when setting up your Alby Hub. After that, you won't need to open more channels for a long time, unless you need to upgrade your capacity. Check out this guide for screenshots and detailed instructions on what to expect. 😊👍
https://guides.getalby.com/user-guide/v/alby-account-and-browser-extension/alby-hub/getting-started
Best,
JP