My friend has built a shed around 200 ft from his house. He wants wireless access in his shed for how-to videos, etc. His house has Verizon DSL to an Asus wireless router. I asked him to check the WiFi strength in the shed, and he found the signal to be weak. What would be the best way to boost signal strength in his shed? The shed does have power. I was looking at APs from Ubiquiti, but don't know what to buy.