Can you compromise over the 'wall'. For example, he could built a fence that is maybe 2 m tall (this might be needed anyway if there will be young children living there) and of a type that limits viewing either way. Another compromise might be on the opening and closing hours (e.g 10:30 pm). I think your only hope is to extract as many compromises/concessions from this person as possible.
Print them on A4 (or US Letter) and make sure they are in colour and in portrait format. Each photo can fill the whole page or no smaller than half the page. They need to be reasonable quality (e.g. select 'high' or 'photo' quality if using a dot matrix printer.