Yeah I'm definitely interested in hearing how it goes for you because I am still considering stocking up a bit on this while it's available.
In regards to the dose, that kind of surprises me to hear that you feel it's only slightly more potent than 2fdck. I felt it was a good bit more potent when I had it. But again, this was a couple years ago, and of course the batch could've varied or my memory isn't serving me right.
For example ime, 100mg of 2fdck would be kind of like a light-common dose (at least for me and considering the batches I've had recently which are admittedly weak) that's not exceedingly powerful, whereas 100mg of 3fpcp would probably get you completely blasted.
The notable thing about 3fpcp I recalled was the "brightness" quality of the visual aspect that I felt. It felt more optimistic and clear than pretty much any other dissociative, while still having the wonk that accompanies other disso's.
I'm trying but can't for the life of me recall the doses I was taking of 3fpcp, and unfortunately I was also taking 2fdck off and on during this period, so that could've colored my experience. But I believe the manner I used the 3fpcp was taking 15-20mg doses, and redosing as many as necessary to get where I was going. I don't think I ever dosed more than maybe 50mg at a time, so maybe I just didn't push it into the realm of complete dissociation due to the potency of it.
With all that said, I think 3fpcp is definitely promising for a more occasional, therapeutic disso to use here and there as an antidepressant or general life enhancer/ mood elevator. So I'm interested to hear how it goes for you. 20-30mg might just be the perfect dose for you, but it could possibly be stronger than you'd expect.