iMac 2 iPads in the home or

[OMN]

Opinion based only

So my wife is using a first gen Macbook air and always has to use my Macbook Pro for work.
i am thinking of getting us a 27''iMac to share and her an iPad mini and or ipad 3 or 4(whatever i can afford at the time) what configuration do you think i'll need i don't have a huge budget.

here is our program use:
Her: web browsing, iTunes,MS OFFICE
Me: video editing software final cut, motion, iWork programs iTunes