Lemons falls on her face building a computer

[LemonRising]

My desktop is dying so I'm starting to look at building my computer (yikes been quite a while)
Figured I'd come around here and get some feedback and help because knowing me as well as I do.. I'll likely mess up.
So far I've only been looking on TigerDirect and Amazon to compare prices.


So currently I've got:

Motherboard:
Buy the GIGABYTE Intel MATX Motherboard at TigerDirect.ca

Graphics Card:
Buy the MSI GeForce GTX 970 Video Card - GTX 970 GAMING 4G at TigerDirect.ca

Processor:
Intel Core i5-4460 Processor, 6M Cache, upto 3.4 GHz, BX80646I54460: Amazon.ca: Computers Tablets

I might try and use my current HP case but I have to make sure it all fits of course.
I have a decent power supply so hoping I wont have to buy another.
I only have 4gb ram so I'll be looking to upgrade that as well.

With the above three I'm looking at (roughly) $800+, hoping to not spend tooo much more.. D: HALP lol