Loving the dark mode option, honestly considering I hardly use my MBP for anything more than browsing around, I really like the design.
System Preferences -> General -> Use dark menu bar and Dock
Depends what you're using it for. I bought a MBP for browsing Chrome, which was an overkill. I mainly use my PC, so PC? But for laptops, I'd prefer to own a Mac as they typically last longer.
Can't believe you own an iPhone 5c, what made you pick the iPhone 5 (with a plastic casing) over the iPhone 5S? Since you're bragging, I also have OS 10.10 & iOS 8.
I think it depends on how that person wants to play, nobody wants to play support if they're not going to have as much fun as playing AD. I always found it difficult to play as support, but playing solo top I could do my own thing and not feel guilty for any mistakes made in-game.