Thoughts on SS bass. Tube mid and high tube pre


Hi all. 

I am considering Bi amping my system. 

Current system is;
Audio Note M6 Phono pre amp 
Audio Note P4 mono blocks
Audio Note 3.1 dac
Tannoy. MG 12'S with split Xover
Heil air motion tweeters on top

I have a Bryston 4b pro on hand that I thought I might run the low end off of and run the mids and highs off the P4's. 
My Tannoy cross overs are split 

Your thoughts, cautions are appreciated. 
128x128pkvintage
Good point on the sub. The heils are a recent addition so I have listened extensively without them. I just run the Heils off the high / mid side of speaker binding posts with a 3.9 film cap in line.
What is the input impedance of the Heil speaker by itself?  I bet it's on the low side, but I don't know.
Sounds like a plan to me. It will help if your cross over has level control.