I belive the Roman catholic missionaries were more successful.  This is because they moved with the natives and did not force settlers to move to the west.  They also did not force natives to change their way of life.

fur company I'd copy.

If I had to chose any fur company to copy I would copy the rocky mountain fur company because they were strong and independent.  They also lived in the mountains for a year and had a yearly summer rendezvous.  They were also founded by two military men.  I would want to be a mountain man.