At the risk of sounding like I am self-promoting, which I am not, I believe a good two head system with Veil G4 will provide more than enough protection for considerably less coin.
I have successfully used both a Blinder M20 (two-head) and a Shifter ZR4 (three-head: two front, one rear) with Veil G4 on my difficult to cloak metallic silver bimmer and have had nothing but success.
A two-head laser diode system, would easily fair as well with Veil G4.
One day, I'd be interested to see a one-head laser diode system with Veil G4 on the headlights and fog-lights compared to a two-head system (without Veil).
If you can get away with a plate cover (like a laser shield) then that will only help.
Doing all three of these (whichever model you choose) would provide a combined synergistic performance that would be extremely difficult to top and provide a level of fault-tolerance/redundancy that any one countermeasure alone would not.
Veil Guy