I only ever owned a early 2013 MBA that I got from Newegg. So I am already familiar with MacOS in a general sense. I am going to be in the market down the line to upgrade for online college. I will be studying Cybersecurity and maybe a few other things like Data Analytics or general IT on the side. My main question is does it really matter if I get a Pro model over an Air or via versa? What are some things I can loose or gain aside from a better performing M2 series chip? I also have a second and third question, what multi screen displays would y’all suggest or watch out for? And lastly, if I ever wanted to use the MacBook as a desktop, would the claim shell have to stay open? Would this hurt the battery?

Thanks