Also, not to blow the air out of your sails but the State of Tennessee does have an open data portal for GIS address data.

So, while it might take a bit of time to import every TN address into OSM it would be the most efficient way. Although this would require experienced mappers to jumpstart the project.

The best use of your time is to properly trace buildings (most quickly done with JOSM if you are so inclined). I really hope you aren't just going in after and using Google Street View to add the addresses.