I have a plot

After creating 122 characters I finally came up with a plot. It has internal conflict, external conflict that involves overthrowing the existing government power. I knew it would come to me eventually. Although I don't know if you would call this outlining. I'm not much of an outliner and when I do I seem to lose interest in the story.

In order for this story to work I'll only need the 1400 original colonists, the first generation and possibly the second generation. Of course they have by no means reached the new home planet. I smell a sequel and so it might just be a trilogy because they are oh so popular in science fiction and fantasy.

The ever popular question: Do you outline or wing it?