I need an website having 5 layers (5 columns) on the main page where selecting in one layer updates information's in another layer using AJAX.
The 4'th layer will display items based on the selection in the 3rd layer.
The 5'th layer will display other items with the same tags as the ones in the 4'th layer.

In the back-end I need:
- elements definition in the first 3 layers and relation's between them
- custom fields editor with templates (groups of custom fields)
- an items editor with custom fields templates, pictures and tags, and related element from the 3th layer selection

The HTML+CSS template will be provided, along with detailed specification's.

The timeframe is 2 weeks