This might help-
My i pad shows 26.7 available from a capacity of 58.1 this is the 64 gb model
I have
123 songs i use it to liston to music on the air plane at times
30 videos The tv show PANAM was free and I have 8 or 9 of those shows did this a month or so ago and have yet to watch could save some memory if deleted
1309 photos saved from ROAR 3 and ZODIAC plus a few grand kids photos
37 applications
I also have a few books saved but they do not show up on the general screen so do not know how much they take up not much i suspect
I would opt for the 64 gb model

I rarely use the 3g access. most of use is from wifi.

Get a pink one for Arlene.