Thoughts on SS bass. Tube mid and high tube pre

I would think very carefully before doing this. Your speakers are the limiting factor here. I would go with Tekton. They have more drivers. The Tekton Moab for example has 17 drivers. So you could have 17 amps. If that's not enough the Ulfberht has 21. If you were to go monoblock that would be 42 amps. The only problem I can think of, bi is 2, tri is 3, octo is 8, but I don't know the word for 21.

If you are into having a really expensive, really cool looking system that soaks up money and space far out of all proportion to how good it sounds, you could scarcely dream of a better method than bi-amping. Bi-wiring is for chumps. EQ? Spare me. Bi-amping rules. 

In truth only one thing beats bi-amping. Tri-amping. Be sure to use mono-blocks. Preferably with outboard power supplies. Because as everyone knows the more boxes and wires the better it sounds.