You can change the sort order of the salesforce Opportunities with the sfdc_order_field parameter.
By default the system will use LastStageChangeDate.
List of fields available can be found here https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/sforce_api_objects_opportunity.htm
It is possible to use a custom field, if doing so, make sure you use its internal name (usually finishes with "__c").