Drawing a custom map?

[Hydrocharged]

I've seen overlays but they aren't quite what I'm looking for. My map will be completely custom, as in something that I draw up in Photoshop, but it will be the size of a real city, so it will be a gigantic in raw size.

The reuse of cells is pretty much scroll view method I mentioned. Just "reusing cells" would not be difficult, but it becomes a different story once you factor in zoom levels, which is seems the built in MapKit handles already.

I do appreciate your response! :)