painting fastback

I researched the single vs bc/cc and there are as many for as against but the thing that sold me on single was a friend of my sons who restores cars and people regularly fork over 50 to 100 grand for him to restore their cars and he said if you miss something on the base , a flaw , when you spray the clear on it will stand out like a sore thumb and then you have to paint the whole panel or side of the car to match the paint, It's not going to be a museum piece or grave yard car but no matter how it turns out it will be 10 times better than what I have now.