Tomorrow is Sunday, so it's probably best to start the migration while we have the most free time. The Q14 site surveyed earlier in the thread looks best to me, though unfortunately it's on the other side of the server so it will take a long time to sail to (Think of it as an epic adventure!).
The plan is to have (at least) two waves. The first, the colonization group, will leave tomorrow when we have a good number of people on; apparently this is usually European evening/American morning. This group should include 6 players, to make best use of the two rowboats, and they will have a few goals
1) Determine that the site is suitable for a settlement, and suitably dwarfy
2) Establish a base camp (not necessarily where the permanent settlement will be). It should be close to the shore, but ideally somewhere just out of sight. No point in leaving a flag around to attract attention.
3) Find local resources; clay is important, particularly as we'll want to build a guard tower as soon as possible. An iron mine would also be good.
Once a base is established, we can send waves of immigrants as available. This also means we wont need to have everyone on at once, likely a blessing due to time zone differences.
For now the goal is to prepare supplies for the colonization wave. The goal is:
A wide variety of tools
Weapons and chainmail armor for at least some members
160 planks and 8 large nails to build an initial 2x2 building
Enough food to keep everyone fed
Some chests/barrels for storage
Spare iron for creating anything else needed on location.