Affiliate Marketing Secrets

Hey guys and girls,
I was thinking about getting a MacBook Air. It’s not for Call Of Duty, Battlefield or any of those games, or any games at all, except maybe some on-line games. I want to use it for, work (secondary school), internet and media (pictures, music, videos etc). Should I get one for these purposes?
Now the main question, if I upgraded everything from it original value, how much would it cost? I’m talking about RAM from 4GB to 8GB, i5 processor to i7 processor and 64GB flash storage to 512GB.
This is a bit of a long shot so I’m not expecting many answers. But if you could, I’d be extremely grateful to you.
Please and Thank You =)