First Pc build

I am building a new pc for gaming and some light video editing these are the parts I am using should I change anything?

cpu: intel core i5 4690

gpu: saphire radeon r9 290x

psu: 850 watt 80+ platinum 

motherboard: msi  atx Z97-G45 GAMING

storage: Seagate 1TB Solid State Hybrid Drive 

ram:  Crucial Ballistix Sport 16GB 1600 MT/s

I am also usuing the cooler master hyper 212 evo

I have not decided on a case just quite yet do you have any suggestions?

Make a pc part picker parts list so people can make changes easier. Also, are you interested in overclocking and/or crossfire ?