Power supply - CORSAIR CSM Series CS450M 450W ATX12V v2.4 and EPS 2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply
its on sale now too
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139058
Video card - well you need to measure distance from the back of the case to the front, how much room you have. May need about 8.3-11"
Measure at the height where the PCIe ( black horizontal slot is ). That's where the card would go. Cost of the card maybe 90-200 bucks depending how much your willing to spend.
here are some options for the video cards
MSI Radeon R7 370 R7 370 GAMING 4G 4GB 256-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support ATX Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127884
MSI N750TI-2GD5/OC G-SYNC Support GeForce GTX 750 Ti 2GB 128-Bit GDDR5 PCI Express 3.0 Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127784&cm_re=750TI-_-14-127-784-_-Product
SAPPHIRE Radeon R9 270X 100364L 2GB 256-Bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202050
quickest r9, slowest of the 3 is the gtx 750