You don't need to do EV or KP anymore.
1. Hit 50
2. Get Columi gear from Flashpoints (Super easy with no lockout)
3. Get Rakata from Explosive Conflict Story Mode
4. Get Campaign gear from Explosive Conflict Hard Mode
No need to do Tier 1, Bioware made it obsolete... It's kinda sad really.
Blackhole comms from NiM in EV/KP, plus all the dailies/weeklies, etc. It is still worth it to do NiM.