Extra Fans for pc?

No extra fan needed tiny voices is right.
first of all i7 is a big time overkill just for gaming and normal home fun.
i7 4770K with GTX 780 moreover TI LOL....its the heaviest beast in the line.

if your editing videos , rendering and 3D modeling and using very heavy application on it then this setup is good but for a first time build when you don't even know what is overclocking buying an unlocked CPU is a terrible mistake because if you try to overclock it and you don't know the method well and don't know what is what in that then you probably should kill your CPU and damage your motherboard too.
so first understand overclocking take advise from experts like tiny voices about that understand how a hardware setup works then overclock it one more thing normally you don't even need to overclock for 80% guys its a luxury not necessity.Remember overclocking reduces the life span of your part too.so without need overclocking is clear cut non sense.
for example this could be a rig your going to buy.

PCPartPicker part list: http://pcpartpicker.com/p/22CEK
Price breakdown by merchant: http://pcpartpicker.com/p/22CEK/by_merchant/
Benchmarks: http://pcpartpicker.com/p/22CEK/benchmarks/

CPU: Intel Core i7-4770K 3.5GHz Quad-Core Processor ($329.75 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: ASRock Z87 Extreme4 ATX LGA1150 Motherboard ($119.99 @ Microcenter)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($87.32 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ OutletPC)
Video Card: EVGA GeForce GTX 780 Ti 3GB Video Card ($699.99 @ Microcenter)
Case: Corsair 400R ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: Corsair Enthusiast 750W 80+ Bronze Certified ATX Power Supply ($69.99 @ Newegg)
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($56.23 @ Amazon)
Total: $1523.22
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-15 04:16 EST-0500)

But for high end gaming and normal home use this rig is enough for you.

PCPartPicker part list: http://pcpartpicker.com/p/22CIK
Price breakdown by merchant: http://pcpartpicker.com/p/22CIK/by_merchant/
Benchmarks: http://pcpartpicker.com/p/22CIK/benchmarks/

CPU: Intel Core i5-4670 3.4GHz Quad-Core Processor ($212.25 @ OutletPC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
Motherboard: ASRock H87 Pro4 ATX LGA1150 Motherboard ($89.98 @ SuperBiiz)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($87.32 @ NCIX US)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($59.98 @ OutletPC)
Video Card: EVGA GeForce GTX 780 3GB Video Card ($499.99 @ Amazon)
Case: Corsair 400R ATX Mid Tower Case ($69.99 @ Newegg)
Power Supply: Corsair Enthusiast 750W 80+ Bronze Certified ATX Power Supply ($69.99 @ Newegg)
Optical Drive: Asus BC-12B1ST/BLK/B/AS Blu-Ray Reader, DVD/CD Writer ($56.23 @ Amazon)
Total: $1175.71
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-15 04:22 EST-0500)

even in this rig GPU is a beast and i consider it an overkill but coz you want it so put GTX780
build normal one as first then understand it better then upgrade and overclock.
even if you want a K factor CPU even then don't jump higher then a i5.
In my opinion i7 is not a home use CPU till now.its a professional one.