Looking at your arsenal, you could use a Dare Devil, or even a Weeck-em to compliment what you have. The external cell is more of a benchmark type that is more of a mid rg/mis high dif, while the CB is a long and strong piece, so to me, you can use a benchmark piece where you can either start with, then ball up to the cb, when you need to chase the oil in, or you can add surface to your cell, use it as a benchmark, then and again, if it and your cb is too much, purchase a wreck-em, and there you have your 3 ball arsenal.
Good luck to you.