Would I be safe to overclock with this setup?

Properly cooled and running on the lowest voltage for your particular chip, theres no reason an overclocked rig won't last you ten years,
You will want a more powerful Psu to keep everything fed if you intend on overclocking longterm/seriously, I'd suggest round about 600w
and how high you can overclock depends on many things, not least of all your chips limits, one processor will go to 4GHz easily, the next won't budge from stock,
You need to tweak your own chip and figure out its sweet spot, check out the black edition clocking guide at the top of this section for some pointers,
I'd also advise putting the second fan on the 212, better cooling in the long run
Moto

I won't be able to get a 600W would the 430W be safe to overclock?

'Build' your Pc into This and it will give you an idea of the required Psu, you can account for the overclock or calculate it as stock speeds
Moto

Changed title and edited OP

The 965 is a better choice than the 4300, four real cores  
Did you build the rig into the Psu calc?
Moto

Where can I get the overclocked V-core from?

Best answer selected by sesbetr72.

Cheers man, in response to your Private message, I built your rig into that (I guessed four 120mm fans) and the required wattage for it overclocked to 4GHz on 1.5v was 397w,
the 430w you have selected will power that (assuming your chip can actually reach 4GHz) and Corsair are a decent brand so I'd proceed,
but if at all possible get a 500w,
The CX500 is a solid alternative and honestly if theres one component you don't cheap out on, its the Psu,
you may find your chip only overclocks to 3.7 or 3.6 comfortably, some chips clock better than others, and no-one but you can find out the exact limit of your actual chip
But for ballpark estimates, yes that Psu will power you a decent overclock and the cooler is a solid cooler well capable of handling the cooling duties, just go easy when you start overclocking and don't try pushing too hard too soon,
Overclocking is little steps on a long journey
Have fun man and thank you for B.a.
Moto