$2500 Gaming Rig Suggestions

Budget:
2500

Expectations:
I am looking to build a replacement PC when my old rig of 5 years died... I wanted to edit videos but my PC couldn't handle rendering, and I needed a faster CPU and RAM. I want a system that can do both on a budget if possible.

Usage:
I love to play FPS games such as UT 2007, Portal, Bioshock Infinite,editing cosplay videos, and surfing the web

Special Needs:


Saved Ticket #: 859195

Specifications:
Chassis Model: Special Deal Hot Seller - Digital Storm Marauder V2 <b></b>
Exterior Finish: - Standard Factory Finish
Trim Accents: - Standard Factory Finish
Processor: Intel Core i5 4570 3.20 GHz (Quad Core)
Motherboard: ASUS Z87M-PLUS (Intel Z87 Chipset) (MATX)
System Memory: 16GB DDR3 1600MHz Digital Storm Certified Performance Series (Highly Recommended) (Hand Tested) <b></b>
Power Supply: 750W Corsair CX
Expansion Bay: - No Thanks
Hard Drive Set 1: Operating System: 1x (1TB Western Digital Caviar (7200 RPM) (Model: Black Edition) <b></b>
Set 1 Raid Options: - No Thanks
Hard Drive Set 2: Multimedia\Data: 1x (1TB Seagate (7200 RPM) (64MB 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: Blu-Ray & DVD Writer/Reader (Burn + Play Blu-Ray & DVDs) (12x BD-R) <b></b>
Internet Access: High Speed Network Port (Supports High-Speed Cable / DSL / Network Connections)
Video Card: 1x AMD Radeon HD 7970 3GB <b></b>
Add-on Card: - No Thanks
Sound Card: Creative Labs Sound Blaster Recon3D Fatal1ty Professional 5.1
Extreme Cooling: H20: Stage 1: Corsair H60 Liquid CPU Cooler (High-Performance Edition)
H20 Tube Color:- Not Applicable, I do not have a FrostChill or Sub-Zero LCS Cooling System Selected
Chassis Airflow: Upgrade All Fans to Corsair Airflow 140mm Performance Edition (Up to 6 Fans) <b></b>
Internal Lighting: Internal Chassis Lighting System (Green) <b></b>
Enhancements: - No Thanks
Chassis Mods: - No Thanks
Noise Reduction: - No Thanks
LaserMark: - No Thanks
Boost Processor: Stage 1: Overclock CPU 4.0GHz to 4.4GHz
Boost Video Card: - No Thanks, Please do not overclock my video card(s)
Boost Memory: - No Thanks, Please do not overclock my memory
Boost OS: - No Thanks, Please do not tweak the services on the operating system
Windows OS: Microsoft Windows 7 Ultimate (64-Bit Edition)
Recovery Tools: Windows Recovery Toolkit (Bundled with Windows CD)
Virus Protection: - No Thanks
Office: - No Thanks
Game: - No Thanks
Display: - No Thanks
Surge Shield: - No Thanks
Speakers: - No Thanks
Keyboard: - No Thanks
Mouse: - No Thanks
External Storage: - No Thanks
Exclusive T-Shirt: - No Thanks
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 am a long time gamer, who is a first timer here on the forums. I'm looking for any input you kind folks can offer. Thanks!