Customize a embeded Google Maps style using GMaps API

I need someone to write the javascript code for a google maps to be embeded in my website. The map/ has to have the following: 1- Look like this one [login to view URL] (including pin style) 2- Have the ability to do grouping by clusters 3- The code should receive an array of jsons with objects for the pins (the objects will contain lat/long and an html code that should be rendered when clicked). The html code of the window is already done. It looks like this: [login to view URL] Please only bid if you have extensive experience with google maps API. To prove that you read all the above, start your proposal with "Hey man," Thanks,