Ok, thanks Ken & Ian & others. My post has spawned just the type of
comments that I had hoped for.

Ian, I've been over to Tom's tubes and I see you have boards over
there. If I do the tetrode I will probably pick up a kit to help out.
I don't like to re-invent unless there is a clear-cut advantage to
doing another way. I'm up in the air over 2 stages or the Tetrode. I
think the tetrode is probably going to win. I've posed the question to
some AM types on AM Fone to see what they say.