I've looked at those streams on the map before! Never fished them though. I think stream width is a function of watershed size in combination with gradient. Steeper streams seem bigger than they actually are. I can think of several examples of streams that are small, but still plenty fishable when they're tumbling down a mountain...when they hit the valley floor and lose their gradient that same stream can look pretty dinky, overgrown, and unfishable.
Just based on the map (and not PFBC list info, access issues, etc) I like the look of 1 a lot, but would probably fish 3 and 4 first based on what I perceive to be a larger watershed, as the others have mentioned. They all have enough gradient.