They look amazing Clayton, congrats. I'd love to have a version with 845s on the output side......... maybe someday. I'm being too selfish, I just got my modest little speaker amp modded after all and that did turn out well.
BTW you can remove the metal shield cans on those C3g tubes, underneath is one of the most beautiful tubes you will ever see. The German Post tubes have gold grids with woven wire mesh shields around them. I intend to find out if the guy who sells them (Jacmusic) is willing to remove the shields prior to shipping as a service as I don't trust myself to remove them myself without breaking the tube. We will also need to find out how to locate the index pin afterwards for proper insertion into the socket, but IMO it is well worth it to see a beautiful tube instead of a black metal can.
Glenn told me your monos turned out really well, the C3g ended up being a better driver than the 10Y. It was a good gamble to try I guess. I had one of those gut feelings about the tube from the moment I first heard about them a year ago.