Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Most XP-M's will OC to 3200+ speeds with the stock cooler and little to no increase in voltage, so yes, that should work great.
I have heard good things about that heat sink in the lower end arena.
Suggestion, though, don't use the Cooler Master LED fan; the things are kinda noisy. (I have one, it's the main source of noise in my comp now.) Try an Antec 80mm Pro fan instead, about the same airflow and significantly quieter.