Help with cooling solutions for 650i mobo

Hey peeps,

I am building a new machine using an EVGA 650i Ultra mobo. I am pairing it with an E2140 proc. I plan on mildly overclocking, but now realize that the NB chip gets quite hot even with the stock aluminum heat sink and the SB chip is completely bare. So, I am concerned about heat issues, especially since I would like to oc this thing. BTW, this is going to be my wife's pc to replace a P4 Willamette and she will be using it for general home office stuff. No gaming or hardcore video editing. I decided to pick up a Vantec cooling kit at a local computer shop for around ten bucks which would give me the option of either using the fan or one of the passive heat sinks on the SB. Here it is:

http://www.xpcgear.com/vanalalvgaan.html

Now I'm considering using the larger passive heatsink from the kit on the SB and either removing the fan from the aluminum housing and somehow attaching the fan directly to the stock NB heatsink in order to increase air circulation around the NB heatsink like this:

http://www.nvnews.net/reviews/evga [...] ge_5.shtml

While the Vantec fan that I have is different, after taking the assembly apart I believe I can fasten it with a couple of screws going between the fins on the NB heatsink.

Or, just go nuts and keep the fan assembly intact and replacing the entire stock NB heatsink with the Vantec heatsink/fan setup like this:

http://www.youtube.com/watch?v=W8MTydQmCBI

Please note that my cooling kit is the aluminum variety, not copper.

So, my dilema is whether a smaller aluminum heatsink with a fan will work better than the much larger passive aluminum stock heatsink or if I should try an get the best of both worlds by dismantling the fan assembly, attach the fan only directly to the stock NB heatsink, and use the larger Vantec passive heatsink for the SB.

I hope you all follow my thinking here and I appreciate any insight.