I just did horrific visions with the whole team in Org and did both corrupted zones + thrall, and finished with a ton of time left. The cloak getting upgraded and adding Expansive Mind 3/3 is huge. Once you get more momentos Elite Extermination will be helpful as well.
Because I had so much time left after clearing 2 wings I tried one of the Lost zones and the affix was just too much. Split personality is basically a no go.
I'm happy with the progress though of not having to run it solo and I've maxed out my cloak at Rank 8 which is as high as I can go and I will just bank the rest of these vials for now.