My Book Cupboard

We are constructing a house and my books are in everywhere. Some are in a drawyer of our showcase.
I have dreamt to have a proper book cupboard for quite sometime.
Now it is going to be a reality.
Nowadays we hired carpenters to make door -windows, I grabbed this opportunely and
ask them to make my dream cupboard. Now everything is finished except polishing it.
There are 4 rows , how many books can i keep there?
I am sharing the joy with my daughter by asking her to keep her books in bottom layer.
I will keep my collections , i don't have much ... but Russian translation and fictions....
I want to show them proudly.