I agree about the forsythia. No way I'd plant wisteria! Messy, tiny little bugs, sooo invasive! Whatever you plant, make sure it is easy maintenance and will act like a wall/hedge--Rose of Sharon can be trimmed easily and is pretty. I'll be praying for your meeting with the zoning man. Hopefully he had a restful and relaxing vacation. Who knows, he may have already had dealing with your neighbor and 'know' about her. Ditto the camera, cheap insurance for just in case.