Good day,
I have gone through detailed requirement, I have experience creating verity of premium WordPress plugins and Themes, like, user tracking, creating custom widget, scheduling, GPS, google map API, new payment gateways, accounting systems API integration,
I can start working on this on immediate basis,
You can track process on daily basis as all code will be on my live server and you will be receiving daily updates,
Looking forward for you reply to start things,
Regards,
hassan