Why would you get Columi gear to run an operation that drops Columi? You get a free set of Tionese gear when you hit 50, put it on, wear your pvp relics and recruit earpiece/implants, and queue for SM OP's via GF. You are more than enough geared.
Keep in mind I said "suggested". I've run TFB in a mix of BM, WH, Columi gear and did fine. But I've also been playing since early access. To not be a boon on healers and have your team carry you, ideally Columi is recommended. You notice the difference in who is dying a lot and who isn't. Especially in Pugs.
But even when you queue for SM EV and KP there is a gear recommendation. Take from it what you will.