Macbook M1 Air or Pro?

Hi, I decided to get a new macbook M1, but I can't decide which one to get. I am currently a grad school student. Usually I just use the computer for school work (essays, projects, emails), Youtube, and regular usage. I do use it for other kinds of purposes like music editing and video editing (but not to the extent of a professional). Sometimes I play games like the Sims 4 (also not an intensive gamer). Should I get the air or pro, depending on my usage? Right now, I prefer the Air because of the price and the amount of work it can do. But I'm afraid it will get really hot and slow as I increase the workload. I want to keep the new macbook for at least 6 years. If I do end up getting the Air, should I upgrade the RAM to 16GB? Thanks in advance!