I'd personally spend a few dollars and get a new cooler for that CPU as almost anything is going to outperform the stock heatsink if that's what you're using. Going over 80C isn't safe in my personal CPU manual. But some people have ran their processors that high or higher.
ASRocks automatic overclocking is pretty decent and sets up most of the settings you need for a decent clock. However, there's a lot of instances where it will push more voltage than is required which will result in higher temperatures.
Temperatures really don't affect the life of the processor as much as voltage can. Running 1.45v on that processor is probably a guaranteed way to have it last less than a year or two. I wouldn't run that thing much over 1.2v if you're wanting it to last.
I now have it going 4.4 GHZ, and am getting 60-65 C during prime 95 testing.
Should I leave it here or squeeze a little more out?
Edit: I'm using the hyper 212 evo, and the 4.4ghz preset put the voltage at 1.248