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I owned the Peachtree Nova 300 integrated and also the X1 Grand Integrated. Both are very good and include a nice DAC. I'm not familiar with your receiver and can't comment as to whether it would be better or not.
I no longer own either Peachtree unit. I prefer the solid state and tubed integrateds I've owned since then, both have a fuller richer sound than the Peachtree units. The claimed 300 watts don't have the same punch as the 50 watts my ARC VSi55 puts out or the 125 watts of my Simaudio 600i. I also owned a Vincent SV237 which I thought was better than the Peachtree units, although a little less refined. I think the Simaudio is the only one that had HTBP.
I think you're on the right track, but the Peachtree might not be the ticket to get you there.