Yeah, I wouldn't worry either. You'll never see those temps in games or other applications. I would fire up PlanetSide2 or GTA IV and see what temps you get as those are pretty CPU intensive games. In fact, I prefer running those over using P95 or any other program.
Also, the R4 was designed more for silence rather than airflow (you already know that), so if you still have the stock FD fans try putting two in the front as intake and one in the rear as exhaust.
When I had the FD fans, they barely moved any air. With the filter installed, I honestly felt nothing on the other side. I'd recommend getting some better quality fans if I were you.
Here's an entire thread dedicated to fan recommendations:
Seeing as you have a NH-D14, I get the impression you don't mind their colors, so id recommend some NF-A14 FLX PWM fans when they come out soon. Or just buy the non PWM version like I did.