First, what are your main uses of the Mac?
Second, how much RAM in the Air?
What size is it's storage (I'm assuming it's also an SSD).
Do you have any external drives?
Mainly use for business - Word, Excel, Browsing, Flash storage 22.53GB available of 250.79 GB
Ram I have at present is 4GB - it's not enough as at times I have crashes when Microsoft is open
Yes one passport external drive - not used often