PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($219.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($24.99 @ NCIX US)
Motherboard: ASRock Z87 Pro3 ATX LGA1150 Motherboard ($94.99 @ Newegg)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1600 Memory ($55.25 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: MSI GeForce GTX 760 2GB Video Card ($239.09 @ SuperBiiz)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($39.99 @ Amazon)
Power Supply: Rosewill Hive 650W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($64.99 @ Newegg)
Total: $799.27
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-29 04:59 EDT-0400)

These commands will increase the amount of polygons used at models.
r_lod "0"
r_rootlod "0"

This command will increase texture detail for everything.
mat_picmip "-1"

VERY sniper friendly map.

Location: Europe, Lithuania.

Pinging 95.47.119.2 with 32 bytes of data:
Reply from 95.47.119.2: bytes=32 time=45ms TTL=55
Reply from 95.47.119.2: bytes=32 time=44ms TTL=55
Reply from 95.47.119.2: bytes=32 time=44ms TTL=55
Reply from 95.47.119.2: bytes=32 time=44ms TTL=55

Ping statistics for 95.47.119.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 44ms, Maximum = 45ms, Average = 44ms

-------------------------------------------------------------------------

Pinging 176.56.238.3 with 32 bytes of data:
Reply from 176.56.238.3: bytes=32 time=38ms TTL=51
Reply from 176.56.238.3: bytes=32 time=38ms TTL=51
Reply from 176.56.238.3: bytes=32 time=38ms TTL=51
Reply from 176.56.238.3: bytes=32 time=38ms TTL=51

Ping statistics for 176.56.238.3:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 38ms, Maximum = 38ms, Average = 38ms

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($199.99 @ Microcenter)
CPU Cooler: Corsair H100i 77.0 CFM Liquid CPU Cooler ($94.99 @ Newegg)
Motherboard: MSI Z87-G45 Gaming ATX LGA1150 Motherboard ($153.98 @ Outlet PC)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($56.99 @ Newegg)
Storage: Samsung 840 Series 120GB 2.5" Solid State Disk ($89.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: MSI GeForce GTX 760 2GB Video Card ($265.91 @ Newegg)
Case: Corsair 400R ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: SeaSonic S12II 620W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($71.98 @ Newegg)
Monitor: Asus VG248QE 144Hz 24.0" Monitor ($250.52 @ Amazon)
Total: $1301.32
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-20 11:58 EDT-0400)

Remove these commands:
-applaunch 10 - You want to launch Counter-Strike?
-gl - "Launch the game in OpenGL

Install maxframes and get the NoHats modification.

~$130 left for your monitor, didn't pick it because I don't know anything about them.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor ($199.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($19.99 @ Newegg)
Motherboard: ASRock Z87 Pro3 ATX LGA1150 Motherboard ($84.99 @ Microcenter)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($60.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ Outlet PC)
Video Card: Sapphire Radeon HD 7850 2GB Video Card ($153.57 @ Newegg)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($35.98 @ Newegg)
Power Supply: FSP Group 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply ($54.94 @ Amazon)
Total: $670.43
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-14 04:44 EDT-0400)

Before defrag:
2639 frames 15.416 seconds 171.18 fps ( 5.84 ms/f) 6.266 fps variability

After defrag:
2639 frames 15.405 seconds 171.31 fps ( 5.84 ms/f) 6.723 fps variability

http://pcpartpicker.com/p/1m24q

Never mind.

I'd rather drop the SSD and build a better base for the PC, you can always get the SSD later. SSD is a luxury item and for this kind of budget I don't think it's a good idea, you're better off spending the money on better GPU like 650 TI Boost (better than 7770)
http://pcpartpicker.com/p/1kVF4

Logitech K120.

Claw.

I'd suggest you to buy the headphones later, as I'm pretty sure that you won't have enough money left to buy decent headphones after you bought mouse, mouse mat, microphone.

Mouse worth taking a look at:
Zowie eVo EC1/EC2
Zowie FK
Zowie AM
Razer DeathAdder
Razer Abyssus(new one)
Logitech G400

Mouse mat:
Razer Goliathus
PureTrak Talent
SteelSeries QCK
Some of the Zowie mouse pads.