Meh, receiving CP is so easy in this game. Collect all fragments in every timeline of Bresha and Yachas. Then you get a fragment skill that doubles all of your CP from battles. And you don'T even need that one, as the fragments will give you more than enough. And go kill the bonus bosses at the Steppe. Killing them gives you a fragment that's about 10,000 CP worth. If they are too strong, just collect the other fragments first. You should get strong enough in no time. Many Paradox endings should be doable for you now. Just avoid the ones before Serah is trapped in her dreamworld and the one at Noel's dreamworld. They should be still too tough for you.