5000 is budget and config not finally decided but looks like this
i5 2500k
asus maximus iv gene
msi 7850 power
corsair vengeance 2sticks of 4gb
cm hyper 212 evo
seagate 1tb hd
asus 24x od
Seasonic SII 620 W will be better because it will provide more OCing headroom. Costs around 5k.
And instead of corsair vengeance, get g-skill ripjawsX 2x4 GB 1600 mhz cl9.
One more suggestion. Post a new thread in pc section regarding your rig, and don't forget to fill the questionnaire. It'll help you better in finalising the components. Do it now.
Avoid seasonic as of now. Seasonic PSUs becoming rare entity in the market. So I guess, you will face RMA problems after 1-2 years.
Cause their might not be any PSUs to replace.