Chewy, the tape you got is perfect. Remember to lay on lightly and once in the correct location press the seams of the tape firmly. You don't want paint getting under the tape. Also after you clean, sand, clean, tape and then clean again, be sure to use a tacky cloth t pick up any lint or dust that is left behind. A good paintjob is predicated on cleanliness.
The flake that I used is a House of Kolors (HOK) blue F22-II royal blue.