i cant really tell you what to do... but maybe keep precious stuff that will fit in ONE reasonable sized box
that way you have only one box and not a whole lot of stuff to move around. I would keep the wedding ring and anything else that she might treasure later on.
A lot of parents these days that are divorced dont usually remain single, maybe you will remarry someday and if that is the case youre daughter will know another man as "daddy"
that is a tough question though