Some of your recommendations aren't very good in any case, to be honest.
That board isn't too great unless you must have SLI support - the DS3 overclocks much better for a similar price - and the 8600 line has pretty much flopped, being soundly beaten in most games by previous gen cards in the same price brackets. Their prices will certainly fall over the next few months, but right now they're not worth buying.
The soldering issue is more for Quad-core users, both SLI and non-SLI, I... think. I read up from somewhere that you have to unsolder a certain resistor (and solder a 500-[forgot the unit] variable resistor in its place, in order to get better overclocking from those processors.)
This sort of thing would be specific to some particular board. I highly doubt you can use the same procedure on all of them, especially ones with different chipsets.
nForce 650i motherboards don't overclock quite as well as P965; generally they get up to about FSB1800; where they max out. I said either 8800GTS or 8600GT; they really cut back too far on the specs on both of those. The 8600GTS ought to have had 64 stream processors, 256bit of either 256mb or 512mb memory. The GT ought to have had 48 stream processors, 256bit of 256mb memory. Also, the 8500GT ought to have had 32 or 48 stream processors and 128bit of 256mb memory. They cut back all the specs by about half; the GTS and GT have 32 stream processors and 128bit of 256mb memory, the 8500gt has 16 stream processors. Just to think... I was looking forward to a major upgrade over my FX5200.
Anyways; I was going cheap for DX10 support and possible future SLI. Thats more the path I plan to take, though I want to go with an 8800gts 320 instead.
Basically you're yelling at me for recommending an SLI board and DX10 graphics cards even when I at least gave a different card as well for DX10.

I won't revise my recommendation for three reasons:
1) He already made a purchase.
2) It was great for at least DX10 support and possible SLI.
3) The RAM I recommended won't go much beyond 800mhz (400mhz FSB; aka FSB1600) when the chipset can go a bit beyond that (450mhz FSB; aka FSB1800)
**I haven't seen a good review for the P6N SLI FI yet; most companies try to sling the higher-priced boards over the lower-priced boards. Looking back now I'd probably say Asus P5N-E SLI.**