With the Trial roulette, you will meet high geared people (along with other newer ones doing the relic quest) so it is much easier than it used to be months ago.

My main is PLD and I did not long ago the relic quest for the WHM, and later the BLM, and now I do the Trial roulette with the WHM, more relaxed than the tank.

I find it's not difficult, but there may be chaos moments. I put regen on the main tank and focus on him while keeping an eye on everybody, put a regen here and there, and when things get a bit rough with the Sisters or Whirlwinds, Divine Seal + Medica 2, Medica if needed,etc.

If there are wipes the echo will help a lot.

Even Titan HM is so much easier now that you meet high geared people and the echo helps a lot if there are wipes. The relic quest used to take weeks but I suppose the fresh level 50 have it much easier now.