Given that each user has a Pro license, members of the Self-Service BI Workspace (for example, Finance Team), a user has the full flexibility to view content in the Power BI service or mobile app as well utilize pro features, such as Analyze in Excel and Email Subscriptions. The users could choose to publish an app from the app workspace and advise workspace members to only use the published app for any production scenarios, such as printing reports or dashboards or referencing this content in meetings. As a small team, the users could delegate responsibilities for creating and testing the dataset(s), reports, dashboards, and any Excel workbooks hosted in the workspace.
If it's determined that the business team requires additional resources, such as support for greater scale or sharing their content with users outside the workspace, the BI/IT team can consider assigning the workspace to the Power BI Premium capacity. Additionally, if the needs or the value of the workspace grows, the project could be migrated from Self-Service BI to one of the other deployment modes.
For example, the Power BI dataset created by the business team could be migrated to an Analysis Services model maintained by the BI team.