I have the same mobo, and looking at it, you may have problems fitting that hsf. Also, that fan's a bit loud (120mm running at 2400rpm = 42.5dB +/- 10%)
Unfortunately, the A8N32 it's not listed on the compatability list on the Zalman site, so can't say for sure.
As your not overclocking, the stock hsf should be more than sufficient for your needs.
If you want a different hsf that looks good and performs well, then check out the Zalman CNPS9500 LED 'Aeroflower'. I have one of these, and it fits without problems, looks great, and is quiet.