2P29Ls are low cost, so if you are in doubt, try those to begin. The transformer for B+ is not too big for these, either.
You can power the filament with a low cost EI dual-bobbin 14V 50VA transformer from your local industrial supplier and my new V9 regulators.
With these power supplies, you can experiment with 01A, 26 or 2P29L (one or two resistor changes) and hear the qualities of this wide range of tubes.
Variations on the Siberian circuit can accommodate these too, with different filament bias resistor (filament bias is excellent for all these)
Thanks Rod.. I haven’t been out of the audio loop since the pandemic and trying to get back fully this year.. I will contact you again hopefully in a few months.