If you decide to go the snaky lines route, may I make this suggestion? Really look at the model from ground level. If you were a human sized figure next to it, how would you paint it? Would you make 60 foot long, never-ending snaky lines, climbing over every surface of the AFV? Or would you spray lines in a 4' wide panel, then haul your air hose a few feet over, and start again?
Avoid the "hand of god" method of applying camouflage. Imagine a maintenance dude having to drag a spray gun and hose around the vehicle. If you look around at german models, you'll often see the "hand of god" affect. I find it unappealing.