Help me finish my computer?

[dannythepark]

So this is my build so far.

CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($189.99 @ TigerDirect)
Motherboard: ASRock B85 Pro4 ATX LGA1150 Motherboard ($69.99 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1066 Memory ($74.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Amazon)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($32.99 @ Micro Center)
Power Supply: Rosewill Hive 550W 80+ Bronze Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Total: $467.94

I got everything except my VIDEO CARD.
I was thinking about getting the:
MSI Radeon R9 270 2GB TWIN FROZR Total: $660.92
Asus GeForce GTX 770 2GB DirectCU II: $777.93
MSI GeForce GTX 760 2GB TWIN FROZR: $717.93

For this computer I will be using dual monitors and playing League of Legends and Minecraft.
Which GPU do you think I should get?

MY BUDGET: 500-700

 

[AMD Radeon]

for PSU go for http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9
much better than cheap rosewill/corsair

and for GPU, i think GTX 760 or radeon 270X is more appropriate for your build.
pick the cheapest one

if you have spare budget, buy 120GB ssd

 

[dannythepark]

for PSU go for http://pcpartpicker.com/part/xfx-power-supply-p1550sxxb9
much better than cheap rosewill/corsair

and for GPU, i think GTX 760 or radeon 270X is more appropriate for your build.
pick the cheapest one

if you have spare budget, buy 120GB ssd

Ok nice.
So this should be my final build?
CPU: Intel Core i5-4440 3.1GHz Quad-Core Processor ($189.99 @ TigerDirect)
Motherboard: ASRock B85 Pro4 ATX LGA1150 Motherboard ($69.99 @ Amazon)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1066 Memory ($74.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Amazon)
Video Card: Asus Radeon R9 270X 2GB DirectCU II Video Card ($212.99 @ SuperBiiz)
Case: NZXT Source 210 (Black) ATX Mid Tower Case ($32.99 @ Micro Center)
Power Supply: XFX TS 550W 80+ Bronze Certified ATX Power Supply ($69.99 @ Newegg)
Total: $700.93

I'm deciding wheter or not I should get a ssd.
Do I really need one? I will be streaming League of Legends and recording minecraft.
Do i need a ssd?