So I got it working! It was the world to screen/screen to world stuff messing me up. It would be ideal to be able to set the camera it uses for the screen region since my map actually goes off screen.
My work around was to have a camera with the MainCamera tag, that's what the project location uses, then another camera thats attached to the map marker, so it moves with it, without the MainCamera tag and uses depth to be placed in front.
I thought setting up a working GPS map would be alot harder!