EVGA x58 Classified worth it?

Hello.
As most of you people have heard or have seen through all of my topics, I am currently looking at parts to buy so I can build my kick ass computer for gaming, that I want to last for 5 years (basically through med. school).
Budget: 2300 USD ($)

Requirements:
1) Resolution 1920x1200
2) High frames per second gaming.
3) Future-proof. Upgradable. Overclock-able.
4) Games: Crysis, Call of Duty, Star Craft II.

Questions:
1) EVGA X58 Classified Motherboard. Is it worth it? (Yes I might want to clock the CPU a little. Cause I am buying the Noctua AIR cooler)

2) Do I have to get the i-7 920? Or can I buy a cheaper one and clock it?

3) How much memory is necessary? (example: 3Gb, 1600 MHz corsair Dominator)

4) What brand of the ATI HD 5870 GDDR5 card is recommended? (MSI, Sapphire, Asus, PowerColor, XFX or HIS?)

5) Is the Cooler Master HAF 922 midi tower good enough, or should I go with the 932 full tower?

NB! Please answer with numbers as I have written it, cause almost allways when people answer, they write it so I don't understand. (not too god with english, sorry).

to DST4ME:
Do you mean that the Classified has better than 16x?
Or do you mean it has more than just one of each 16x & 8x?

Originally posted by DST4ME If I'm not mistaken the classifed has 2 x 16x while LE has 1 x 16x

Should I get 3-way or the 4-way CLASSIFIED?

go 3 way, besides even up to tri sli you wont gain much vs dual gpu sli.