@weiserb - I used the GIK room modeler.  It isn't great, but it is free!  https://www.gikacoustics.com/room-acoustics-visualizer/

@bdp24 - Thanks.  Yes, the instrument collecting is fun, and it has taken me most of my adulthood.  Maybe a 'proper' jazz guitar to still add.  One day!

@cdorval1 - Yes, I did make the LP rack.  It was one of my "covid projects". (https://jenwoodhouse.com/vinyl-record-storage/).  It was fun and required purchasing a few new tools (part of the fun) and learned some stuff along the way.  BTW, made the rookie mistake of building it too small.  It filled up far too fast. :-)

@mjcmt - the CJs are "old system".  The new tube gear much warmer than the CJs, which I prefer.  The CJs are great, but have a sharpness on the higher end that I've grown to dislike as I've gotten older and my taste (and probably hearing) has changed.  Great call out about "seasonal" systems with the tubes.  That Dynaco heats the room in no time in the winter, and makes the room a bit overly "spicy" in the summer!

@oldears - thx for the callout about moving the speakers further into the room.  I've experimented a LOT with the Electa Amators and they need to be a bit further away from the listening position to make the soundstage integrate well.  I do give up a bit of the pinpoint imaging, but the trade off is worth it for the "in the room" feeling of acoustic instruments that I'm after.