Not sure what's happening there as that boss seems to be one of the easiest. I'd say the group of bosses before are more difficult. Sounds like you're doing everything correctly. The dps should be focusing down the turrets of course. Other than that I've never found that much damage on that fight, I usually do a little bit of dps on the side. There does seem to be some stigma against operative healers and I have no idea why. I've healed them all upto and including cademimu at level 30 with no problems at all.

This just translates to "I'm 50 and I'm ace, look at me!" /golfclap for attention seeking

It does feel a little clunky I have to admit. I'd be alot happier having some form of mouseover macro or click casting function so I could target the boss for interrupts etc. I'd also like to be able to increase the size of the debuffs aswell. I suppose all this comes from playing wow for too long though. I'm only at 29 and have healed upto mandalorian raiders without too many issues. But I agree it could be a little more fluid.

We get our 3rd companion from Alderaan, which is the world after Tattoine. I actually ran all the class quests there to get him at 27/28 as I got bored of waiting. It's quite tough as it's aimed at 30+ but soloable with stealth. Different classes get their companions at different times from what I've seen.