For Haswell it varies greatly depending on the chip, but I would say you can at least hit 4.2-4.3Ghz. With that cooler, temperatures will not be your issue, the silicon lottery will be your main factor in overclocking.
I'm sure I can get to 5Ghz by overclocking by 1.2Ghz to 4.6 plus the 0.4Ghz boost. I just want to know if I can maintain the heat. I will have a 200mm fan blowing air in from the top directly to the CPU.