thing is the stock head gasket is a non metal type and much weaker design. Yes it will be ok for the levels your talking about but replacing the head gasket is not like changing a set of spark plugs. Its a fairly involved job so when you've gone to the agro of taking it all apart why not put a little bit more money into the car and fit a metal unit, even if its a stock thickness etc so won't need retuning etc but will give you alot more piece of mind in the future against head gasket failures.
Metal head gasket all comes down to block and cylinder head prep, I've never had a single head gasket issue when i've done them using Cometic (which i am getting 4e head gaskets made soon), Yet i've seen some people fitting themselves have leaks. Same goes for athena, zep, HKS, APexi etc etc.
Don't bother paying £260odd for azep when a cometic or athena for £100 will do the same thing. There is no difference in strength.
Tim