Well I finished my first colony on the beta world in 2 weeks.
The result is: small, easy and quick.
There is no blockage, the shellfish are easy to obtain, especially if you make short-term harvests.
The next ones will be even easier because I now know the mechanics and the quests (even the last quest is just a formality).
For the expansions I didn't look for noon to two p.m., I took the cheapest ones to be able to remove the rocks immediately (there is 1 left at the end)
Even the probability of x4 is high, it starts at 5% compared to 3% for other colonies (7% for the second)
It took me a little thought to arrange the buildings, I think that it is mainly the good choice of expansions that plays a role, at one point I found myself with a slightly odd surface and sides of 8 squares which was not necessarily the best choice, but then the arrival of 4 x 4 buildings made the plans a little easier.
In the end my remaining colonies will probably all evolve identically if I find the right way to expand because there are no variable elements.