u got 2 love rajah
about the coffee treatment (here are some links )
http://www.rci.rutgers.edu/~dpevans/Nepenthes/N_rajah.htm
http://www.cpukforum.com/forum/index.php?showtopic=36286
my temps vary depends on setup location and seasons of the year.
coldest near the cold plate (night 5 -10 and day 14-18)
hot spot night 12-18 deg and day 18-30
the humidity is min 65% during the day night 100%
link 2 my set up
https://forum.petpitcher.net/showthread.php?t=1412