Given that your PW is a higher loft than a "traditional" PW at 47-48* I would actually go a bit up to make sure you don't have such a large gap from PW to your wedges.
I originally got a 52-56-60 because that's what many say you should get when you're starting out. I too also quickly checked my ego at the door and realized I couldn't hit a 60*.
I also didn't want a large gap in the wedges so I have switched out to a 52, 54 and 58 set of wedges. Also, my PW was switched out from my stock Nike VR split cavity wedge to a Vokey 48, bent to 47*. I also still keep the 56* since I do think that it is the most versatile of the wedges and will swap it out with the 54 or 58 depending on the course layout and playing conditions.