It's a fun flashpoint so you should try to give it a go. But running it at a normal level with a level 18 isn't going to be any fun for the other players. I ran it the other day and the team leader invited a level 19 sentinel. He was on sprint the whole time, mauling guys before we could even get to the next mob. Even though we told him this, he kept doing it and it sucked all the fun out of running it. Since then, I won't run a flashpoint with someone far over the level range. However, I'm sure there are other people who would be more than happy to have someone of a higher level with them that can carry them.
Yes, this is what I was afraid of. I just finished it. A level 11 or 12 jedi joined me. I made sure to turn off sprint as I realised how dumb that would be.
I tried to leave some fun to him so I would throw a cryo grenade at the big bots and then pulse them while he sliced away at them. The tough part is with the regular soldiers, they died so fast. I tried to just limit my shots to hammer shots, but habit took over. I think he had a good time.
Funny enough, he said he had done it before but he did
I have to say it was pretty slick. Quiet a few different paths could have been taken for the story.
edit: oh and it did take us a while to figure out how to do the bonus. Didn't realise we both had to work at the same time. I don't think you can get your companion to do it.
2nd edit: I was too embarrassed to mention this, but I actually died during the operation. I don't think this is to spoilery, but we had to jump down a shaft and I missed the last platform and dropped to the ground and died.