Lawrence,
Using standard is always a good idea and you can request to the SAP QM team a "bulk" upload BAPI be rolled into standard product as well.
On a related side note since you are going the standard BAPI route you may get some value out of this QM Integration example which covers exactly this scenario. It was built for MII 12.1 originally and if I was to redo this I would leverage MDO and not a database table for staging the data that is to be loaded into ERP; easy enough to change over the content to use MDO.
Integrating MII with ERP QM - This article provides some
insight on how to integrate your MII v12.1 software with the SAP ERP QM module
via JCo. This will allow in-depth SPC material based inspection lot analysis for
single and multiple inspections lots. This document provides both an overview of
the process steps and screens along with detailed steps on how to build your
content within MII and a pre-built example project of all of the content.
Hope this helps,
Sam