I'm not sure on the ambient temp but it's warm without feeling too hot or cold, just a comfortable temperature.
There's no more room for fans but I might take a look at the airflow for good measure, I'm moving to a less cramped room in a couple of days anyway so I might see improvements there without having to do anything at all lol
I'm guessing by "kinda high" you mean "could be better" rather than "is likely to be a danger to the card" right?
From everything I've read, Furmark pushes the GPU well beyond what anything else would. If it stayed below 90, you are probably pretty good to go. You'll find that most people are geting up to as high as 85 on the most punishing games.
yeah 80 is normal. under 80 is cool. more than 80 is not so good.
so try to have it under 80 mine is 76.and when you play a game it's normal to have it above 80 but try to have it under 90
and for Arma2 there are patches for making it better you can download them from:
Start Gpu-z in the monitoring tab it will show you peak max temp. Run a 3d demo such as re5 or Dirt2 demo/full benchmark a few times. It probably won't be anywhere near Furmark. This also gives you your memory temp (which is usually even higher) Also if your rig didn't crash during Furmark, thats another positive sign. But I'd run 3d in window for some hours before just subjecting it to Furmark. Which under some circumstances might cook a card way easier than hours of gaming ever could.