Hello Larry Duncan,
SAP BI is a good data warehousing module with bright career.
Mainly BI can be divided into three parts Modeling, Extraction and Reporting. Since you already have good knowledge in data base, it will be cake walk with BI navigation. Good decision.
Another advantage with BI module is you will have a detailed material link
In your BI learning or working time, if you need some clarifications reach SCN through below forums
SAP NetWeaver Business Warehouse
SAP Business Explorer (SAP BEx)
Business Content and Extractors in Data Warehousing
Regards - Kumar