Smaller is easier, save for the complexity of the special E-Linear cascode Circuit I feel is the best approach to this particular design.

I think I rather moderate voltage pentodes to triodes. Not much sport involved with triode finals in many of the aspects I find interesting. I am still going to do the 4E27 amp. Soon enough I'll be paid enough to afford it.

I am not 'UP' on chassis construction companies. I am going to buy a drillpress for my shop...
regards,
Douglas