Well, the estimate of 80% uniform coverage on the upper body might be about right. Looks too splotchy to make me happy but I'm not investing in another Metalcast set. Too expensive for such poor coverage. Maybe I'll try a light over spray with the silver undercoat.
I'm happy enough with the fin can even if it wasn't exactly what I had in mind. Later, I may paint the exposed section of the motor tubes some other color since the silver is too close to the color of the fin can.
Hope it flies better than it looks. (It looks slightly better in the flesh. The camera flash seems to bring out the worst.)