Got a bit deeper into the blueprints and just had a suggestion. As you mention above to change the start location of the camera you need to go into the game mode blueprint and then adjust the position of the camera from the player location to your own location.
I thought this should really be a function on the camera blueprint, as I spent a good amount of time trying to figure out how the camera was working, turning on and off things etc… trying to find where to set the initial position of the camera.