Building second system around Harbeth P3 esr

I bought the P3's a couple of months ago. I should have some cash soon to go forward with this system. My thoughts are the Croft Phono Integrated. Please share your thoughts on not only the amp choice, but what this systems strengths might be. I just want to listen at low to moderate levels, and be engaged. I wish they were more efficient, which is why I'm thinking Croft, which has a tubed stage, and SS amp.