Starcraft/Red Alert style camera. How?

Hi guys! Newbie here.
I´ve been trying, with no small amount of fustration, to setup a camera in the level blueprint so the camera is controlled with the mouse. What I want is to move the cursor to the edge of the screen and have the camera to pan in that particular axis, and zoom in/out with the mouse wheel, like the games mentioned above.

Now, I´ve managed to setup something that´s getting close to what I want…BUT…the camera panning speed is too slow, and unless the mouse cursor is exactly on the middle of the screen, the camera panning never stops, it just keeps going.

I feel like there is a better way of doing what I want, but this is all I got so far, If anyone knows a better way that would be awesome.