SAP QM - Source inspection or early inspection lot

Requirement is Supplier sends Pre- shipment 2 weeks before the delivery date.

Example : PO will have 2 line items. Line item 10 - 800 pc and Line item 20 - 4 pc. Vendor will ship 4 pc 2 weeks in advance. Quality team will test the 4 pc. If 4 pc are approved, inspection for 800 pc should be skipped.

What functionality in SAP QM can i map this scenario. Couple of findings Source inspection, early inspection lot or skip lots.

Please suggest.