Cooling Thermal load calculation and rad help please!

I just need to see if this is likely to work... I've got 2 rads, thermochill 120.1 and a 120.2. I was initially going to use both at different points in my planned loop, but im wondering if i can get away with just using the 120.2 as it would make the plumbing much easier! Its going to have to cool an opteron 146 @ 2.6/2.7ghz, 7800gt @ stock, A8N chipset and mosfet. Now, if im calculating this properly using http://www.koolnquiet.com/home.html?target= this as a thermal load calculator im getting a load of between 50 idle to 249 peak with a typical useage of 149. This article about the 120.2 (http://www.overclockers.com/articles778/index04.asp) suggests that it might be able to do this dependent upon flow rate and fan used? Am i reading this right? Any help would be appreciated - i've marked my case out for teh jigsaw!

 

You could do it on the 120.1 and still get acceptable temps.

There's little a person could to to overheat a 120.2, and it's practically impossible to overkill a 120.3-it'll handle more than a kilowatt of heat. At that point, i say, build with impunity.

 

I've seen a PA120.1 cool two X1900 cards, an Opteron 180 and a PPU with an 1800RPM Papst, so I think you can get away with using a quieter fan on just the 120.1

Assuming that your rads are the PA series, and not the HE

 

These may help...