Not a bad overview, I agree that the stun bubble spec is too DPS heavy though. I personally would put no points into convection and instead put full points into Electric Induction.
I would also refrain from taking chain lightning at all, preferring to put at least one point into Will of the Sith. I would say that lightning effusion is a great talent unless you know you are never going to stay alive long enough to run out of force. Generally it is a great force management tool when used in conjunction with lightning barrage.