You system seems like it is already pretty warm and lush sounding. Adding warmth through the cartridge is not going to do anything to tame reflections and room node issues.
If you really want to add warmth, an Ortofon Classic SPU Royal N or SPU N E will add it in spades. I will also second the recommendation for the Grado cartridges - the Reference and Master series are very warm and lush.
But... given that your system appears to be so warm already, if it were me I might try something else. Maybe a Benz Glider or Wood, or one of the Ortofon Cadenzas. For a little less money, a Soundsmith Aida or Ortofon 2M Black are also a great match for that tonearm.
If you really want to add warmth, an Ortofon Classic SPU Royal N or SPU N E will add it in spades. I will also second the recommendation for the Grado cartridges - the Reference and Master series are very warm and lush.
But... given that your system appears to be so warm already, if it were me I might try something else. Maybe a Benz Glider or Wood, or one of the Ortofon Cadenzas. For a little less money, a Soundsmith Aida or Ortofon 2M Black are also a great match for that tonearm.