I’ve also started running this solo for a bit as well. The choice was influenced after I started reading Existential Kink by Carolyn Elliott, which I have to thank a couple people on the forum who I saw post about this in the past month (@TheEmpress I believe you were one of them). Since it’s all about shadow work, PHOENIX felt like a perfect companion. I recommend the books exercises (especially “Deepest Fear Inventory” and “Beat Yourself Up”) for anyone running PHOENIX… consider it a “taking action” companion 
Oh and @James I believe I recall you recommending the book “It’s On Me” by Sara Kuburic in a thread. I also read that and loved it, thank you for sharing it.
So far it has been very smooth for me. Really intense dreams. Sometimes I can’t recall them after I wake but I just know that they were significant. The book is shining a whole new light on existentialism for me, definitely embraces a more absurdist outlook which I have been drawn to this past year of healing. I’ve read lots of Nietzsche, Kierkegaard, Jung over the last 20 years but sometimes it can start to feel really heavy. Carolyn Elliott does a really great job of putting a modern spin on it and showing you how the philosophy can be more practical. Also appreciate her outlook on magick, which is putting me back in touch with a part of me that’s been pretty dormant.
Shadow work was always very intimidating to me and previously I would only scratch the surface. With the book + Phoenix I dove into the abyss and am having a blast, laughing all the way.
Solve et Coagula
“To first utterly dissolve (solve) an existing form and then to carefully bring the dissolved and purified elements together again (coagula) in a whole new, more potent and finely organized, permutation.”