No change.
730bc : Decide for 3 villages on North island and 2 on South as North is already 2nd ring and South is first ring. Let's get some specialization here :
- Camoladonum : least corrupted city, with only a Temple and good shield tiles starts the Lighthouse.
- Lugdunum : corrupted but great shields , switches to barracks and will produce mil units and the odd settler when getting towards size 7.
- Alesia : with a granary will produce workers and settlers.
- Entremont : will switch to Harbour now and produce Sail units and military units.
710bc : Verulanium founded on North island. BW due in 4 turns, it wouldn't have been my choice of tech but OK I am not going to do a minimum science gamble on it.
690bc : Gergovia founded on South island by cow and Augustodurum founded on desert tile on South island. Hut on North island is deserted

Camulodunum needs MM every turns in order to speed up onder production.
ibt : we can build the FP !
670bc : working, moving...
650bc : Our vet archer and settler arrive on a new island.
630bc : Bronze working comes in and the choice of new tech is really difficult. I take a min science gamble on Literature for a chance at the GLib.
Galleys are sent around empire for exploration.
610bc : the Southern most island is not very interesting but we will settle 2 cities there.
590bc : zzz
ibt : The bloody Limeys complete the Great Lighthouse

of course, well at least we do not lose too many shields on our our current build.
570bc : I consider switching to FP but, no, we do need a second core at one point. Switching to harbour only loses a few shields.
I spot a new island to the NE with Silk and cow on it...
550bc : The exploring galley to the East can go round the new island before coming back.
Nice scenario, hope the next leader makes contact !
http://www.civfanatics.net/uploads4/TH4-550_BC.zip