My temps were higher with two BFG reference cooled 8800GT OC's. They idled upper 50's and sometimes the top card got over 90 degrees on load if I didn't manually bump the fan speeds up. It was a constant battle of noise vs temps, so I pulled both coolers and put Zalman VF900CU's on them. Huge difference in temps and noise with them.
You may want to crank up the fan speed while your playing if you think thats a little high. Before the HR-03 GT came out I would crank the fan up to 75% from its default setting of 29%. Of course I was overclocking, but if the temps concern you that much you might want to give it a try.
Use RivaTuner. Be warned, the stock 8800GT cooler is LOUD when it goes above ~50%. Like Xbox 360 loud.
Or use nTune. And the stock fan is too loud to keep the fan running that high at all times. Before I got the HR-03 GT I would manually adjust the fan and overclock settings to play games and set it back to defaults when I was done. Now that I have the cooler, i just flashed the over clocked settings to the card and let the HR-03 GT do its thing. With the zip tied 120mm fan it stays nice and cool and is uber silent. You have to play with it and see what is acceptable to you.