Planning this bag for X-PRO 1 + 3 lenses and occasionally a laptop. Does this bag hold a Macbookair 13"?
This is a great bag and probably would be the perfect size for your camera and lenses, though I recommend getting an extra padded insert so the inside is fully padded - I've got one about 3"x6" which fills the available space perfectly.
But I doubt it will hold your Mac - unless it's 8"x10" and thin enough to slip into the back pocket, where I sometimes stuff a book or small notebook (the paper kind!).