I would create another OVS UI and use the default settings for the event handlers, outports, and inports.
It will work out of box if you just bind the OVS to a standard query. In the "data model" map the object ID and object name to the ID/description fields of the BO you are going to bind the OVS to.
Once you get that working, then you can add the SADL query, delete the standard query. When you do this then you will need to go into the event handlers and change the "query" that each event handler will use as it will use the old query.
Once that is done you can fine tune the inport/outport. The outport defines what you will see in the OVS UI when you do the typeahead. The Inport defines any data you want push into the OVS to default in the query filter conditions when the query fires and returns a default list.