ludus :
I like the swap from 4670k to 4690k, and adding the SSD, I'd keep the PSU as is. Not a fan of the CX PSU.
Personal preference really, any reliable brand psu would work so long as it has less wattage and is cheaper than what he picked. Emphasis on reliable.
And that's just it, not sure how reliable the CX line is...and if I am dropping $1k plus on a build, the last place I'll cheap out is my PSU. It's the life blood of my system. Just because it's a Corsair, doesn't make it like all Corsair's. They slap their name on other OEM makers units...and their cheaper units, are just that...cheap.
Personally I'd go for a Seasonic. The 520w and 620w models are reasonable priced, and nobody makes better power supplies.