Tips for tower events are here.
Startbonus: 125 coins
Collections: 600 coins every 8 hours (5400) = Total: 5525 coins.
The total does not include coins from quests or Dragon TV.
For collecting times check this.
Succuby -R- #652: 3 pieces.
Iceling -VR- #717: 4 pieces.
Mystic Tribe -E- #329: 4 pieces.
Hurricaine -L- #1405: 6 pieces.
Abominable -L- #1502: at the top.
In the past tower events we could get orbs of the dragon at the top from the L-tower chests. Now these chests hold orbs of Jörmungandur -L- #1434.
I would suggest to wait with moving to see if this is intended or not. Perhaps SP will change that when Easter holidays are over.
For a better resolution click this link: https://i.imgur.com/cO6yF5O.png