Long island here I come... Mabe

Looking to move to the middle island.

I am short of egg tokens and with the timers in the howitzer branch and the xp hole merging will create figured now is a good time to move. If such a thing exists.

Towers will be
Dark, fire and ice flak maxed for level
Red and blue mage maxed for level
Storm maxed for level
2 lightnings (94 and 50) these will max with xp hole)
Mage around 70ish
Howitzer only 66 (will take a coue of events to sort this out)

Question is about layout tips and any suggestions on how best to set it out and if I should swap for any other towers.