You are using Google Cloud SQL as the database backend for a large Customer Relationship Management (CRM) deployment. As your user base grows, you need to ensure scalability and availability. Specifically, you want to achieve three main goals: 1) Avoid running out of storage, 2) Maintain CPU usage below 75%, and 3) Ensure replication lag remains under 60 seconds. Considering these requirements, what are the correct steps to meet your objectives?