How to create a parent album with hightlights from sub albums?

Hi there,
When loading up my images from this summer's vacation, I came up with an idea of how to organize my images that I'm not sure if it is possible to do or not. I've been looking at different modules, and posting questions about some in other threads in the forum but I can not sort it out. So I thought I'll ask an open question instead and see if I can get some advices... I have been looking at the links/replica-module, the tags and the keywords as well but I can not figure out a way of using these to make it work the way I want.

So, this is what I want to do:

I want to create an album, called "July 2007". In this album I want to add three sub albums, one for each trip made this month. They will be called "Hemavan", "Kolmården" and "Astrid Lindgrens Värld". In each of these sub albums, I would like to post all images related to this specific trip that share. And in the parent album "July 2007" I would like to have some of the best images from each subalbums to be displayed. The idea is that my visitors, friends and family foremost, would be able to go through the "July 2007" album first and then have a closer look at the specific sub albums if one want.

I want the images not to be copies of each other with two sets of originals, comments etc. I want them to be the same.

An example of how images could be organized could be:

Album: "July 2007"
Images displayed: 001.jpg, 008.jpg, 014.jpg, 029.jpg
Subalbum "Hemavan"
Images displayed: 001.jpg, 002.jpg ... 009.jpg
Subalbum "Kolmården"
Images displayed: 010.jpg ... 019.jpg
Subalbum "Astrid Lindgrens Värld"
Images displayed: 020.jpg ... 037.jpg

Hope you understand what I'm aiming at. If this thread is better posted elsewhere in the forum, please help me move it.

Thanks
Stefan