Considering a new MBA "13 to do some mobile tasks, basic email, web browsing, Etc. However, I was also considering it to do a small amount of audio work, mainly just some pro tools. I was thinking of I7 and 8GB upgrades. Any thoughts? I wouldn't be doing any extravagant 30+ track with tons of plug ins. Maybe 10 to 15 tracks and about the small with plug ins. Thanks guys!