Currently I am in Chapter 11, grinding CP on the Archylte Steppes. Gotten 5 stars on the first two missions, and I'll probably try for the third here soon.

Lightning has maxed Ravager so far, about 3/4rs of the way through the eigth (last so far) tier of Commando. Then just got to fix up Medic. Won't worry about alternates yet. Ruinga is fun as heck, but why didn't they just name it Ultima, with Flare as the base version?

Fang has maxed Commando, and about 2/3rds through Sentinel.

Hope has maxed Ravager, and currently plowing through Synergist. Maybe it's odd to go for Medic last, but he gets Accessories and ATB gauges through the other two, not to mention they help me kill faster (finally, he gets Faith and Bravery! Now if only he would get Haste...).