Start bonus: 550 fog coins
Collection: 600 fog coins every 8 h For collecting times check this.
Total without freebies: 5.950 fog coins
Dragons: Dandy (#942)
Brave (#1.023) NEW
Thanks to the Fog Coin Quest which will give us up to 2.250 additional fog coins we can get 3 dragons for free.
The route for Dandy, Side-T and Brave costs 7.530 coins. (map 1 and 2)
The route for all dragons costs 9.235. (map 3 and 4)
We start in the center of the map. Black line is forward, white line is backtrack.
Pro tip: If you are not sure how many coins you will get from the quest because of the waitingtimes... just wait until the last collection and see how many coins you have in the end. Then you can decide what dragons you want and if you perhaps have to skip one or more.