Maybe I misread the talents but i thought lightning strike's 3 stacks increased your force regen and chain lightning gave you 3% dmg. From what I understood you were saying lightning strike gives you both buffs?

As far as your rotation goes i see a couple flaws. I see the rotation as this. 1. Crushing Darkness(Once CD is over reapply) 2. Affliction(Keep applied at all times) 3. Thundering Blast(It critically hits all targets affected with affliction.) 4. Chain Lightning( It stacks up to three times adding a bonus of 3% total dmg. So keeping it at 3 stacks would be good IMO but getting there will require some time due to CD) 5. Lightning Strike(Obviously 3 stacks necessary) 6. Force Lightning( On proc)

Lightning and Madness with potential respec into heals for end game.