I pick according to the big picture.
When breeding you need to have goals and acquire and or holdback your animals based on that not because something is cheap or available.
So the first step is to define YOUR goals.
Now what would I have done differently? I would have narrow down my project from the start but 14 years ago I wanted to work with everything and really did not accomplished much as I was too spread out so I had to restructure to finally get where I wanted to be.