Dude, a MFSW is NOT a requirement for cruise control retro fitting, and you don't need VCDS to find out what steering controller you have. Just drop the cowling around the column and you will find the controller attached underneath, the part number should be clearly visible, post or PM the number and I will confirm if retrofit is possible.
To access the controller, turn the steering wheel 90 degrees each way to expose 2 x torx screws, there is a third screw underneath in the recess where the rake and reach lever is.