pc for world of warcraft 800$ budget

[asben]

hello i was wanting to build a pc for only world of warcraft and to stream youtube,netflix and crunchyroll.i`m going to need piratically everything but a pc case and i have a 120 gb ssd and the case i have a nzxt i got for Christmas and i have a hp pivallion case that im planning on using that holds a micro atx motherboard

 

[i7Baby]

So - a matx build with no case and no ssd -
edit
CPU: Intel Core i5-4690 3.5GHz Quad-Core Processor ($223.87 @ OutletPC)
Motherboard: ASRock H97M PRO4 Micro ATX LGA1150 Motherboard ($79.99 @ SuperBiiz)
Memory: G.Skill Ares Series 8GB (2 x 4GB) DDR3-1866 Memory ($66.30 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.88 @ OutletPC)
Video Card: MSI Radeon R9 280 3GB TWIN FROZR Video Card ($179.99 @ Newegg)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($52.99 @ Newegg)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer ($16.98 @ OutletPC)
Operating System: Microsoft Windows 8.1 - 64-bit (OEM) (64-bit) ($89.98 @ OutletPC)
Total: $759.98

 

[esco_sid]

if you can use OS from your HP

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor ($219.99 @ SuperBiiz)
Motherboard: ASRock Z97 PRO4 ATX LGA1150 Motherboard ($96.48 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($62.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.88 @ OutletPC)
Video Card: EVGA GeForce GTX 970 4GB ACX 2.0 Video Card ($329.99 @ SuperBiiz)
Power Supply: SeaSonic 620W 80+ Bronze Certified Fully-Modular ATX Power Supply ($49.99 @ Newegg)
Total: $809.32
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-02 19:37 EST-0500

 

[asben]

I can use my laptop os and thanks I'm trying to order the parts asap