vksy emailed me earlier today to share his not-yet-built Millett Hybrid P2P layout. He's done a good job and it looks pretty straightforward to me, but it's not yet tested. He's the one who posted yesterday
about using diamond buffers with the Millett. Modifications include parallel tubes (2 per channel) and the possibility of diamond buffers. Pete has commented on the modifications but hasn't built, tested, or heard anything like it, so can't vouch for how it would sound. Pete said paralleling tubes increases Gm and lowers noise (at least on paper).
I want to do this P2P Millett myself. vksy said total cost for amp and (Tangent's) LM317 PSU (not including case, knobs, shipping) was just ~$135.
P.S. Even the Dynahi boards were only around $8/pair, so I know what you mean. I think it all comes down to "do you want to make things easy".