Recommendations on upgrade

Hello all, I have been using my old rig coming up on 4 years now and it is really showing its age now so I was looking to DS to get a new rig.
I use it as mainly a gaming rig with at least 4 hours of usage daily for FPS and ARMA3 CoD BF3 ect. My budget is up to 4000 but saving money is always nice.
Here is the one I came up with but I have a few questions about it, mainly, would having the dual loop LC for cpu and SLI cards be more beneficial (stability and overclocks) than saving the money and using stock cooling on the next step up in GPU? A;;ways wanted a nice LC system though...
I use dual monitors no 3D and run games at 1920x1080
Chassis Model: Special Deal Hot Seller - Black OPS HailStorm Edition
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i7 3930K 3.2GHz (Unlocked CPU for Extreme Overclocking) (Six-Core)
Motherboard: ASUS Sabertooth X79 (Intel X79 Chipset) (Features USB 3.0 and SATA 6Gb/s)
System Memory: 16GB DDR3 1600MHz Digital Storm Certified Performance Series (Highly Recommended) (Hand Tested)
Power Supply: 1200W Digital Storm Certified (Dual/Triple/Quad SLI Compatible) (Silent Edition Highly Recommended)
Expansion Bay: - No Thanks
Hard Drive Set 1: Operating System: 1x (120GB Solid State (By: Corsair) (Model: Force GT Series CSSD-F120GBGT-BK) (SATA 6Gbps)
Set 1 Raid Options: - No Thanks
Hard Drive Set 2: Multimedia\Data: 1x (1TB Western Digital/Seagate/Hitachi/Samsung (7200 RPM) (32MB Cache)
Hard Drive Set 3: Backup\Misc.: - No Thanks
Optical Drive 1: DVD-R/RW/CD-R/RW (DVD Writer 24x / CD-Writer 48x)
Optical Drive 2: - No Thanks
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card(s): 2x SLI Dual (NVIDIA GeForce GTX 670 2GB (Includes PhysX)
Add-on Card: - No Thanks
Sound Card: Integrated Motherboard Audio
Extreme Cooling: H20: Stage 6: Sub-Zero LCS Dual Loop: CPU & Dual SLI/CrossFire Video Cards
H20 Tube Color: Red Tubing with High-Performance Fluid (UV Lighting Reactive)
Chassis Airflow: Upgrade Chassis With LED Performance Fans (Red) (Up to 6 Fans)
Internal Lighting: Internal Chassis Lighting System (UV) (Creates Glowing Effect for H20 Tubes)
CPU Boost: Stage 2: Overclock CPU 4.5GHz to 4.8GHz (Requires Pro/Deluxe/Sabertooth Motherboard)
Graphics Boost: FREE: Yes, Overclock the video card(s) as much as possible with complete stability
Memory Boost: - No Thanks, Please do not overclock my memory
OS Boost: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 7 Home Premium (64-Bit Edition)
Recovery Tools: Windows Recovery Toolkit (Bundled with Windows 7 CD)
Priority Build: - No Thanks, Ship Within 10-15 Business Days After Order Is Successfully Processed
Warranty: Life-time Expert Customer Care with 3 Year Limited Warranty

I'm agreeing with bprat on this, two 670s on air will handle two 1920x1080 monitors just fine as long as you're not going into BF3 Ultra. You can spend the money on the LC and overclocking and then you might be able to hit a high enough clock so that Ultra is doable, but on the other hand, you can also try ditching the LC for dual 680s instead.

LC loops always look nice though

Fan wise, I took a small hiatus from the forums, does DS use any LC specific fans now? I remember back then people were often recommended to request Scythe Gentle Typhoons for LC loops because of their static pressure.