According to req. power supply specs for that card, you will need a min. 350 watt psu. I have that case and it's great. Pick up an extra 120mm fan and you should be fine.
I keep mine on the desk next to the monitor and it's VERY quiet.
Antec makes a high quality product, you wont be dissapointed.
If you have doubts about the power supply, upgrade to a 400watt. If you add up the wattage usage of each component in your system, you'll probably have plenty of power with some to spare.
Sounds like a killer system, where'd you get it?