Undertaker:
-How many blacks? If there's only one, add another.
-How many razors per DDT? You should only have a max of 4 or 5.
-Extend the wedge, or if you have even more weight make it a double wedge.
-I don't think the front pair of wheels will work unless you rotate the HP Z-Teks to have the flat sides of the hexagon facing up and down or use Grannies. Actually, the SnapperII isn't worth two of your drive motors, so you could just get rid of it entirely.
-It's probably not worth it to use a HP Z-tek for the FS, so if you find yourself in need of weight just use a RAD or Redbird there.