For anyone interested, here is a quick guide for farming CP quickly and easily at the start of Chapter 11.
Chapter: 11
Location: Archylte Steppe (i.e the first big open area)
When you first enter you will be shown your first Ceith stone, and there will be a save point near by. When looking at this save point, i.e facing a cliff, turn left and run along the wall.
You will soon encounter a Behemoth King, he can be easily ambushed and when killed gives 4000cp. The best way to ambush him is to stand in the little crevice to his left and then jump up the little wall, you will be out of his "danger zone" so he will not attack you, and will be very close to him allowing you to ambush him quickly.
Now the tricky part, he needs to die in a single break or within about 5 seconds of Break ending, otherwise he will shape-shift and replenish his entire HP bar.
Set up should be Commander/Commander/Ravager or Commander/Commander/Commander and your weapons should be upgraded to lv 5-10, commanders also have an ability that can insta-kill an enemy on low health which is almost a requirement if you aren't quite strong enough to finish him in a single break.
Try and chain your attacks so he stays launched for the majority of the fight.
After his inevitable demise, run back to the save point and a little past it, then turn around and head back, he will be respawned and ready to have over more CP.