''would it be ok if I used a stock cooler for the CPU for 6 days then change the cooler to the hyper 212?''
YES! but take care ...do not overclocking
should i use the thermal paste that comes with the cooler or buy a different one?
always better to use aftermarket thermal paste
so I just got my CPU in the post, I will use the stock cooler that comes with the CPU for about 6 days, then I will buy the Hyper 212 and put that on. And you suggest I don't use the thermal paste that comes with the Hyper 212?
NO ... you can buy separatly a thermal paste ,it can come in small tube , if you have a electronic store near you? if is impossible for you to buy ...you can go with the stock thermal paste in that case ; just check the temp of cpu each week.