Show customers location using Google Maps-API

Need to create a mapping project to visualize our customers (approx. 4000) by using Google Map API.I want a filter for city/ZIP and different versions. I need a sidebar that contain some customer info that can be sortable and clickable with additional attributes. As well a second google map should be placed on the customers detail page just to show the location. The data are stored in mySQL database. ## Deliverables Detailed requirements attached - and sorry, there will be some german words on the existing pages, but I will translate them.