Stage 1. Find suitably paintogenic location; hopefully not too far from where the Compact Royce can reach. Go to spot several times just to survey it. Think about it some more. And some more. Decision time.
Stage 2. Load the car with every possible piece of kit imaginable, even with stuff you know you won't need (like a magic wand). Haul it all to the site. Breathe deeply. Do arm swinging exercises (Bauhaus style). Start daubing.
Stage 3. Will I keep the finished job?
The answer is 'possibly'. I'll hold onto it for a while, until I go back for a second, more simplified, stab. I do tend to destroy more than I keep.