Brother won a billboard contest for Lamar in Lake Charles. Where should he put it?

Brother in Law won a small business billboard contest for Lamar (Advertising Company that does Billboards) where he can put his business on any Billboard in the Lake Charles area for 30 days.

Question is where should he put it?





Link to navigate the map.

BIL is a plumber who does 90% of his work in Lake Charles.