I've read this thread with interest as I have been working on a ST35 monoblock pcb using the 5Ha7/4ha7 and configurable for el84/6gk6s. I forced myself to learn DesignSpark PCB (free with no limitations) and should have the board ready to be fabbed next week.
This was more or less an experiment to learn how to use the pcb program and have a few boards for myself but there will probably be extras available. The board will be 10cm x 10cm.