A6-3650 overclocking question

Hello, I have a a6-3650 APU and I want to overclock it to 2.6ghz to 3.2ghz. I'm going to use the AMD overdrive program. I wanted to know if I need to buy a aftermarket fan or use the stock one. And also, can I be able to overclock the intergrated GPU? what program?

You can overclock the intergrated gpu using varous tools like msi after burner or evga's percision x 

take in mind that you WILL need a aftermarket cooler to overclock basically at all on the gpu and I would reccomend doing the same for the cpu as you will more than likley not be able to make it to 3.2 from 2.6 without making a toaster