The Corsair VS Series isn't good for much.......not much more than a basic office computer (no GPU, no OCing etc).
As far as the 550W element, you should be ok with that. I'd suspect your rig is capable of pulling around 350W (at absolute, absolute max) at stock speeds - if you OC your CPU/GPU/both, that'll increase your power draw, but 550W should still be a comfortable level.
Where are you located?
I'll assume US for now - these are much better options in the 550W + range.