I just want a MacBook Air 11" that's been upgraded to have 16GB of RAM and a slightly larger 12.5" screen put in it. I've been waiting for that for years. Thr

I just want a MacBook Air 11" that's been upgraded to have 16GB of RAM and a slightly larger 12.5" screen put in it. I've been waiting for that for years. Through 3 other MacBook Air purchases; always hoping the next time around they'll make what I want.