Hello there,
I will definitely help you to finish this, i've experience Google Map API integration, I had done many Integrations with different API's. I go through with your requirements and understand what exactly you want.
I am ready to start work, I've More than 5 years of experience in Google Adwords, Google Maps API, Javascript, PHP, API's, integration etc.
I look forward to your response, Thank you.
Regards,
Arun