I have played WoG in SP to check it [not the last version though] and just started MP game on it [turn4].
Twan made it and suggests to play on cumulative VP of 3. From what I know about mechanics of VP they are given at the first summer month of a year. And you do not need to keep them in a row, for 3 VP you need to have that province for 3 first months of any years.
There are I think 8 provinces connecting to the center island + water provinces around it [8 too, I think], co 16 including 4 gateways.
I don't know how many cumulative VP we would need for team-play. Oh, do not set any additional VPs
Gateway is just a name. There is simply long arrow connecting gateway to the center island. So a player doesn't have to go through plains but can go through caves instead.
P.S. I am not so heavily for WoG, I am just really a huge supporter of making the map as balanced as possible [I wish Twan set every indie province on the map to make it equal
]. I know that not wrap-around provinces are not fair.
I haven't check the map Dr. P suggested, I have nothing against non-water maps, but it is just me.