Indeed, it was super easy to follow this guide and setup rclone for use with a shared Gmail/Google Drive account that our team shares access to. 15GB of storage is more than enough.
Using the sync rclone command means that only the current backups will be stored on Google Drive. this is actually a lot more convenient than the default/built-in AWS plugin, because that one didn’t delete the old backups, nor the log files, and I had to log into AWS and delete them manually now and then.
Note that you need to run rclone cleanup as well, before rclone sync, in order to clean up the Trash. Otherwise Google Drive may run out of space, because files in Trash still count against the quota.