Well, my initial post didn't bring out any objections ... so, I must be heading in the right direction ... right?
Here's my rendition of the original schematic ... I'm comfortable with cathode biasing the power section, so that's in the plan (although I'm sure that it wouldn't take much arm twisting for me to change it ... ;o). I like the fexibilty of being able to change out the power tubes from anything between the 5881's to El34's, and obviously that requires some tweeking of the resistor in the cathode bias section ... (there I go, twisting my arm again). I don't quite understand what the 'Fidelity' circuit is doing in the second channel, but it does add some uniqueness between the two channels. I've also stiffened up the power supply section. Next step is to build the layout on paper and turn this into my next project.