I also planning to use the NH-L9i for my next build (possibly in D4+)
you maybe interested to check out below video for adding fan duct to L9. It down 4.8C in a Dan A4-SFX case
Late to the party, just came across this lovely case. Hope it open for sales again soon.
Just curious, did you make the noctua colour cables for the plex PSU yourself or Overtek offer it? Can't find any colour option at Overtek website.