IMO one thing to consider (among others): the longer you plan on keeping it, the greater the capacity you should buy.
Definitely not 16GB.
Go with the most you can afford.
It's always better to have it, and not need it, then need it, and not have it ...
I am now on my third Ipad, and I have bought the 16gb every time. The only time I run out of storage is because of photos and video, when that happens I transfer my pics and vid to the pc.