Custom Google Map creation via KML feeds

We have dozens of KML feeds we would like to use to create a custom Google Map. We would like it to have a category sort by Type and by Location (Country). We would like it to be similar to this custom Google map: [login to view URL] and use the markerclusterer script: [login to view URL] If we provide the KML files, can you create a beautiful custom Google Map for us?