I am a university student and I've been using windows laptops for as long as I remember. My current configuration is a core i7/8gb/1TB windows machine. I want to buy a macbook air but I'm worried if it would be enough as I have never used a machine below 8gb's of ram. Furthermore if I am to upgrade to an 8gb ram it would cost me around $125 dollars and I would have to wait for 3 - 4 weeks to get one (This is because there is no apple store and only official apple authorized re sellers). I don't play games. The laptop will be used mainly for word, excel, powerpoint, watching movies and surfing but I open many tabs 15+ along with a few word documents during assignments. Office for mac seems to be not as good as the windows version so I'm assuming I'll have to use parallels a bit. I have 2 external hard drives so hd space isnt a problem. Would the base model suffice or should I upgrade the ram? Is the ram upgrade worth it for that price and time delay? Any help is greatly appreciated!