Depending on the source that you look at PCPy is meant to be as strong as PCP or very slightly weaker, although this could be due to the subjective differences in effects. A threshold dose of PCP (intranasal, less unpredictable than oral) is about 5mg, an average full spectrum dose is about 10mg while a strong dose is 15mg+ with anesthesia (holing) occuring around the 30mg mark.
The 3-MeO derivatives of PCX, once again depending on the source/reports you look at, are generally as strong as their parent compounds or slightly weaker (say, 25% weaker)- for instance the threshold/full-spectrum doses of 3-MeO-PCP seem to be roughly the same as PCP (if you don't have a massive NMDA tolerance, as many of the people who have written Trip Reports have) while higher intranasal doses (20-30mg) seeming to be better tolerated, which is not to say that they were not strong experiences.
I'd imagine that 3-MeO-PCPy would be no different- after doing an allergy test try for threshold effects with a 5-8mg dose (depending on your weight an NMDA tolerance a threshold dose could be as high as 10-15mg) and then work your way up, full spectrum effects should present themselves somewhere around 20-25mg.
3-MeO-PCPy could be quite good, the addition of a 3-MeO group seems to give a certain manic edge (rather than the opiate effects predicted by the SAR) and a reduction in the anesthetic effect- PCPy would be sedating enough to offset the mania while still reducing the anesthetic effects (which make it an easier drug to work with than PCP where taking too much results in you getting stuck in a anesthetic loop). 4-oxo-PCPy could also be a winner- minimal stimulation, almost a straight dissociative downer. So many arylcyclohexylamines! So many possibilities! Talking about arylcyclohexylamine SAR is like going to a recreational drug mongolian bbq 'I'll take a good dose of sedation, a nice opiate glow, a healthy amount of dissociation and just a smidge of stimulation stir fried in chilli oil, garlic and ginger please'
