Maze explanation is here.

Startbonus: 400 coins

Collections: 600 coins every 8 hours (5400) = 5800 coins.

The total does not include coins we can get from quests, runner or dragon tv.

For Collecting times check this.

*Dragons:*

Chibi-Chum -R- #1090: The path costs 860 coins.

Red Egg -VR- #328: The path costs 2825 coins + 1 key = 3285 coins.

Kitty -E- #1122: The path costs 3630 coins + 2 keys = 6005 coins.

Shapeshifter -L- #1525: The path costs 6020 coins + 3 keys = 10830 coins.

Timelimited:

Jun1 - 3: Darksteel -L- #1078: The path costs 8165 coins.

Jun2 - 3: Alchemist -L- #1425: The path costs 6720 coins.