[Build Help] $1500 First Build.

Here is the build I have setup for right now:

Part list permalink / Part price breakdown by merchant

Type	Item	Price
CPU	Intel Core i5-2500K 3.3GHz Quad-Core Processor	$179.99 @ Microcenter
CPU Cooler	Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler	$19.99 @ Newegg
Motherboard	ASRock Z68 Extreme3 Gen3 ATX LGA1155 Motherboard	$129.86 @ Newegg
Memory	Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory	$54.99 @ Newegg
Hard Drive	Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive	$129.99 @ SuperBiiz
Hard Drive	Crucial M4 64GB 2.5" Solid State Disk	$84.95 @ Adorama
Video Card	Asus Radeon HD 7870 2GB Video Card	$349.99 @ Amazon
Case	Cooler Master Storm Sniper ATX Mid Tower Case	$129.98 @ Newegg
Power Supply	Corsair 750W ATX12V / EPS12V Power Supply	$139.99 @ Newegg
Optical Drive	Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer	$56.23 @ Amazon
Monitor	Acer B243HLbmdrz 24.0" Monitor	$259.00 @ Mac Connection
	Total
Prices include shipping and discounts when available.	$1534.96
Generated 2012-03-24 16:25 EDT-0400

I have some questions about getting together my first build.

~$1500 budget. (March 30)

~$500 budget. (April 30). If I need to.

All I have right now is an old keyboard and mouse. I'm using a laptop right now so I will be needing everything.

• Whole PC
• Two Monitors (One Pivot)
• New Keyboard
• New Mouse

I will need this right now:

• CPU
• Motherboard
• Memory
• RAM
• Hard Drive (SSD & Standard)
• Video Card (7870/7850/560ti 448)
• Case
• Optical Drive
• Monitor (Pivot)

I want to get this later:

• CPU Cooler (So I can OC later)
• Video Card (SLI/Crossfire)
• Monitor (Non-Pivot)
• Keyboard
• Mouse

Questions:

CPU Cooler:

• Can I just use the stock one?
• Or if I plan to upgrade eventually (which I do), should I go ahead and get a better one?
• If I get a different CPU cooler which thermal compound should I get?

Motherboard:

• I've noticed that a lot of people get the Z68.
• Does this mean it can run two 7850 at x8? Do I need x16?

2 x PCI Express 3.0 x16 slots (PCIE2/PCIE4: single at x16 (PCIE2) / x8 (PCIE4), or dual at x8 (PCIE2) / x8 (PCIE4)) (PCI Express 3.0 with Intel Ivy Bridge CPU, PCI Express 2.0 with Intel Sandy Bridge CPU)

• The other motherboards I've been looking at is the Gigabyte GA-Z68

Video Cards:

Right now the only game I know I want to play is Skyrim w/ Mods.

• 7870 (Will this be enough?)

(If I get one of these. Will I eventually need to SLI/Crossfire)

• 7850
• 560 TI 448

Case:

• Will it work?
• Any better other suggestions?

Monitor (Alt):

• HP 1920 x 1200
• Acer 1920 x 1080
• Normal Monitor suggestions?

Sorry about so many questions.

I've watched the Newegg videos and tried to do as much research as I could.

TL;DR: Any improvements on the build I picked.

--Edit--

Updated:

I think I've decided pretty much what I want. Thanks to everyone who answered.

Part list permalink / Part price breakdown by merchant

Type	Item	Price
CPU	Intel Core i5-2500K 3.3GHz Quad-Core Processor	$179.99 @ Microcenter
Motherboard	ASRock Z68 Extreme3 Gen3 ATX LGA1155 Motherboard	$129.86 @ Newegg
Memory	Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory	$54.99 @ Newegg
Hard Drive	Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive	$129.99 @ SuperBiiz
Hard Drive	Crucial M4 64GB 2.5" Solid State Disk	$84.95 @ Adorama
Video Card	MSI Radeon HD 7850 2GB Video Card	$276.60 @ NCIX US
Case	Cooler Master Storm Sniper ATX Mid Tower Case	$129.98 @ Newegg
Power Supply	Corsair 750W ATX12V / EPS12V Power Supply	$139.99 @ Newegg
Optical Drive	Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer	$56.23 @ Amazon
Monitor	Acer B243HLbmdrz 24.0" Monitor	$259.00 @ Mac Connection
	Total
Prices include shipping and discounts when available.	$1441.58
Generated 2012-03-25 10:22 EDT-0400

Then, I plan to update my build later when I get the money.

• I plan to overclocking my processor and add this cooler.
• Get a second monitor.
• Finally, if I need to I will Crossfire the 7850 using another one of these.