[Hardware Question] SSD just for the OS?

[klem]

May I jump in as I am about to spend significant money on a new PC?
BUT This thread has raised a few of questions..

If it's inappropriate I'll post separately.

I am considering (almost decided on):
i7 950 Retail with Nehalem cooler
6Gb G.Skill NQ DDR3 160MHz (Triple Channel for ASUS board)
Coolermaster HAF912 Plus, Black, Chassis
OCZ ModXStream Pro 600w Silent SLI Ready ATX2 Modular
Asus Sabertooth X58 TUF Intel X58 (Socket 1366)
Crucial RealSSD C300 64GB 2.5" SATA 6Gb/s Solid State Hard Drive
Windows 7 Home Premium Operating System, Retail
1GB XFX HD 5870 XXX, PCI-E 2.0(x16), 5200MHz GDDR5, GPU 875MHz, 1600 Cores, DP/ 2x DL DVI-I/ HDMI (why buy PCIe 2.1?)

Plus existing:- 160Gb 7200 SATA HDD for OS, 160Gb 7200 SATA HDD for Documents/Photos/Crud and a R/W DVD.
My current 'Flight' disc is also a 160Gb WD 1600JS-00NCB1 7200 93.5MBps like the others.

So my questions.....
1. Isn't 1366 socket later/newer than 1156?
2. What's the better 'future' of these sockets/processors?
3. I was intending to use the SSD for my 'Flight' Drive (FSX at 17Gb including the SDK and IL-2/mods at 13.6Gb hopefully leaving plenty for SoW). These SSDs are quoted at something like 'up to 355MBps' vs my existing 93.5MBps. Would a new HDD really be better?
4. Does any genius know how much space SoW will take?

btw csThor (original poster? I'm stuck in 'Reply' ) The i7 950 only supports 1.5v memory not 1.6/1.65. (Source: my online chat with Intel Tech Team). Do you know what your 960 supports? I found it very easy to pick unsuitable memory.

Hoping for some replies..

klem