My experience with Power Plants (I’ve had a P300, a PPP, a P5, and have now a P10 and a P15) is that the larger the power plant the better the sound. So if you can afford a P10 I’d suggest that.
I have a PP3 to which I power a BHKPre, DSD Mk2, An Innuos Zen, Jay’s, and Phono Pre. Never had an issue. Prior to the latest additions had M700’s as well. Actually considering a second.