MacBook Pro Retina + 3 external displays + clamshell + heat issues

Hi Apple Community,
I have a 15" MacBook Pro Retina (2.6, 16GB) running 3 external displays (2x 22" via thunderbolt ports -> VGA & 1x 27" via HDMI). I am running in Clamshell (i.e. the MacBook Retina has the lid closed and is in a TwelveSouth BookArc). I currently have SMC FanControl running and set the fan to max (~5900 rpm) which is keeping the temp at ~54 degrees celcius.
Basically I'm wondering if anyone knows about the heat management with using a macbook this way. Will too much heat damage the screen since the lid is closed etc.... How hot does the macbook have to get before damage can occur...?
Many thanks
SamNz8107

Hey Samnz8107!
Thanks for your reply. Saw it straight away and tried the update but it didn't work. When you open the dmg it says:
"Alert:
This software is not supported on your system."
So that's unfortunate!
Nope nothing comes up on the third screen when plugged in. And in the display window in the System Preferences, in arrangement, only the mac display and two displays are shown. It seems that the mac only wants to see two external displays. Because say all three are plugged in, it's whatever is plugged in last that isn't seen. So it's not a specific problem with the HDMI, because say if I unplug one of the VGAs, then the other VGA and HDMI will show no problem!
When three screens are plugged in, the third screen is on and knows something is there (so it doesn't go into standby mode or ask you to connect something...but it just stays off. It's not a black screen - it is definitely off .ie there is no signal...but the screen does know something is there!
Any further ideas?

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