If you are really shure that you want to paint it why not just remove the bigger, easy to remove peices, and mask the rest off. Masking it off wouldnt be that hard, and wouldnt take too long.
The hardest part would be getting the tape to stick. If you are to do so wipe everything down very good with a paint prep solvent, that will get all the armor all, or whatever other chemicals are on your dash off. Then you should have no problem masking it up