Complete Minimum Viable Product for testing, using a framework if needed.
The app must be somewhat like Uber, clean and direct. It will work through Facebook and contacts invites, will have payment interface (PayPal, Apple Pay and Google Wallet), notification in app, a map showing the location (based on google) and export this location to google maps or Waze, for GPS directions.
That can be done using frameworks on the market, to make it fast.
Is this project for you? Drop us a line over how much you think it's fair, and your or your team timing.