Dont get Corsair CX series PSU, Get Tier 1 or 2 but if they cost to much get Tier 3. And yes 430w would be enough for this build. If you want to game with this PC the build isnt very good.
A bit better quality than CX. CS450m is tier 3, CX series is tier 4
Where are you buying and what is you budget ?
Basicly the cs is 80 plus gold and that's why i am considering it as 'good'
My budget is about 80 euro
note that i live in greece and the prices are a bit higher than usual