I finished up my first Poseidon / MK-III clone with KT-90s and a big GZ-37 rectifier tube, JJ 12AX7/12AU7, Triode's DynaClone transformers, and SDS Labs cap board. I biased it up to 65 ma nicely balanced and it's KICKING !
It's too late to start the other one ... so maybe tomorrow.
Time to go sit in the dark and watch it.