I get what you're saying about grow into it, but those CPUs will never get that cheap, and by the time they do cost that much used, they won't really be worth it, but I get your point and agree with it.
Your links don't seem to work (remove the e3wwwtest part), but generally you've got some good boards selected, MSI is a very reputable brand, if you want to look at a few others for price comparison I'd check out Asus and Gigabyte (if you wanted some other options price wise, but if you're fine with the price on the MSI, no issues going for it).
Your point on SLI is well taken, but I'd suggest something different than the 8600GTS, check this board out:
I know its a little more expensive, but its a faster part (its competitive with some of the 8800 line) and doesn't break the bank, its also generally considered to be more power efficient and quieter than the 8600GTS, either would be fine though.
As far as Intel chipset vs nVidia chipset, I've never had issues with nVidia chipsets, but I've only run nVidia chipsets on AMD boxes, as far as Intel platforms, Intel chipsets are by far my preference, as long as you aren't buying their value series (and the P35 is not a value series part). So I doubt you'd have issues with either board, but I'd go with the P35 (this is a strong suggestion).
Basically, looks good dude, make sure you get a good PSU on there, and good cooling throughout, and you should be setup quite nicely.
Hey I'm just about to buy parts to build my computer.
After checking out my needs/wants i came up with these motherboards:
MSI Neo2: http://e3wwwtest.newegg.com/Product/Product.aspx?Item=N82E16813130098
MSI Platinum: http://e3wwwtest.newegg.com/Product/Product.aspx?Item=N82E16813130097
Nvidia nForce 650:
MSI P6N SlI-FI: http://e3wwwtest.newegg.com/Product/Product.aspxItem=N82E16813130082
MSI P6N Platinum:
I like MSI motherboards, havent heard anything but good things from friends that have them, but I don't really care about the brand as long as its not a no name brand. I know that at least the P35 mb's support the new 45nm C2D's and FSB 1333. Not as sure that the nVidia one's do (45nm) Does anyone know anything about that? I'm really leaning towards the Intel set because my friend has a nForce 650 eVga board that wont network and wont work with the Orange Box. Not sure if that really has alot to do with it, but hey. I like these also because I can grow into them, I mean when the $1300 C2Extremes are $50 each I can throw one in along with some 1333mhz DDR 3 RAM. As far as SLi goes, I really don't care about it because you're better off getting one faster card than two slow ones. Probably going to throw 2gb of PC6400 in along with a MSI 8600 GTS (http://www.newegg.com/Product/Product.aspx?Item=N82E16814127284) some SATA DVDRW drive, SATA HD, and Vista Home Premium. I was really just wanting to know if anyone has had any expirence with these boards and would appreciate some feedback.