How much memory do I need?

So I want to buy the HP spectre 360. But I can’t decide if I need the 4gb or 8gb. I dont game, dont edit videos etc. I use it to store pics, browse the web, watch Netflix and use office for papers etc excel and power point. I currently have a 6gb, and I haven’t used all of it. Not sure exactly how much. The 4gb is on sale, so the price difference between the 2 is big. I did notice the 8gb has better speakers and Windows 10. You can uparade the 4gb to 10 for free. Can you help me figure out if I need the 8gb?