Only a small part of the private colonists would be actual farmers while the rest would be miners and Crystalsmiths. Abominations couldn't work in the mines, but they could still Chaos Warp everyone to destination, protect the settlers, and use earth magic to develop the fields.
The mana geysers would also ensure a steady supply of energy for the members of the Organization, ensuring that they would leave no trace of their existence.
As for the mined goods, until Vastor found a way to safely smuggle them via the Gates, they would be stored inside dimensional amulets and collected by his hybrids from time to time.
While exploring the areas between the outposts and the mines they planned to exploit, Orulm and Abthot found an ideal spot for a settlement. It was relatively close enough to the Transoceanic Gate of Darmoq and surrounded by fertile plains.