$3000 build. Can i take out 120hz monitor and fit 4k monitor

[fadeyi]

The link for my build is
http://pcpartpicker.com/p/2ZpRYJ
I am trying to decide if i should stick with the 120hz monitor in the build as is or take out some non essentials and add this ASUS PB287Q 28-Inch Screen LED-Lit 4K Monitor 4k montior.
I still want to stay within my $3000 budget.
I am still cant decide which way to go.. Pros and cons will be helpful too. I think the build
is 2k ready and i believe the monitor will run at 60hz for gaming with this setup.
Link to the 4k monitor
http://www.amazon.com/PB287Q-28-Inch-Screen-LED-Lit-Monitor/dp/B00KJGY3TO/ref=sr_1_1?ie=UTF8&qid=1405871987&sr=8-1&keywords=ASUS+PB287Q

 

[tiny voices]

Is this a gaming build? If so go down to 16gb RAM AT MOST. Anything more is a HUGE waste for gaming.

 

[Anheanz]

you also might as well go for the 4790k and z97 mobo since there basically same price.

 

[Build-O-Matic]

It's now better. Changed 2x290 for 2x290x and added Haswell-R cpu and Z97 mobo.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($279.99 @ Micro Center)
CPU Cooler: Corsair H110 94.0 CFM Liquid CPU Cooler ($97.99 @ NCIX US)
Motherboard: ASRock Fatal1ty Z97X Killer ATX LGA1150 Motherboard ($152.99 @ Newegg)
Memory: Corsair Vengeance 16GB (2 x 8GB) DDR3-1600 Memory ($162.99 @ Amazon)
Storage: Crucial MX100 256GB 2.5" Solid State Drive ($109.99 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: Asus Radeon R9 290X 4GB DirectCU II Video Card (2-Way CrossFire) ($529.99 @ Micro Center)
Video Card: Asus Radeon R9 290X 4GB DirectCU II Video Card (2-Way CrossFire) ($529.99 @ Micro Center)
Case: Corsair 750D ATX Full Tower Case ($119.99 @ Newegg)
Power Supply: Corsair Professional 1050W 80+ Gold Certified Semi-Modular ATX Power Supply ($179.99 @ Amazon)
Optical Drive: Asus BW-16D1HT Blu-Ray/DVD/CD Writer ($69.99 @ Newegg)
Operating System: Microsoft Windows 8.1 Pro - 64-bit (OEM) (64-bit) ($133.98 @ OutletPC)
Monitor: Asus VG278HE 144Hz 27.0" Monitor ($369.99 @ NCIX US)
Keyboard: Logitech G710 Wired Gaming Keyboard ($100.00 @ NCIX US)
Mouse: Logitech G502 Wired Optical Mouse ($79.99 @ Amazon)
Total: $2987.85
Prices include shipping, taxes, and discounts when available

 

[marooner]

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($339.99 @ Newegg)
CPU Cooler: Corsair H110 94.0 CFM Liquid CPU Cooler ($97.99 @ NCIX US)
Motherboard: Asus Z97-PRO ATX LGA1150 Motherboard ($187.99 @ Newegg)
Memory: PNY XLR8 16GB (2 x 8GB) DDR3-1600 Memory ($139.00 @ Amazon)
Storage: Crucial MX100 512GB 2.5" Solid State Drive ($212.99 @ Amazon)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ NCIX US)
Video Card: Sapphire Radeon R9 290 4GB Tri-X Video Card (2-Way CrossFire) ($389.99 @ Newegg)
Video Card: Sapphire Radeon R9 290 4GB Tri-X Video Card (2-Way CrossFire) ($389.99 @ Newegg)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Power Supply: EVGA SuperNOVA 1000G2 1000W 80+ Gold Certified Fully-Modular ATX Power Supply ($139.99 @ Newegg)
Optical Drive: Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer ($49.99 @ Newegg)
Operating System: Microsoft Windows 8.1 Pro - 64-bit (OEM) (64-bit) ($133.98 @ OutletPC)
Monitor: Asus PB287Q 60Hz 28.0" Monitor ($589.99 @ NCIX US)
Keyboard: Razer Blackwidow Ultimate 2014 Wired Gaming Keyboard ($100.00 @ NCIX US)
Mouse: Logitech G502 Wired Optical Mouse ($79.99 @ Amazon)
Total: $3001.86
Prices include shipping, taxes, and discounts when available

I optimized it and added the monitor.
CPU is now 4790k.
Cooler is now H110.
Mobo is Z97.
32GB RAM is overkill.
Changed 840 EVO to MX100 due to cost.
Case is cheaper and (in my opinion) better.
PSU is cheaper.
Optical drive is cheaper.
Replaced monitor.
Blackwidow Ultimate is the best overall gaming keyboard at the same cost.