[Skunkworks] OT- Mobile App - urgently needed below are specs... contact me if it is

We are currently on an event plan for our client a soft drinks manufacturer and we would like your professional opinion before we present our ideas formally. We wish to develop an app to be used at a golf tournament- an app that will show users the distances they have covered, when they need to re-hydrate and the nearest watering points etc. Kindly give us your opinion on: - - If the idea is executable - What needs to be in place for it to be executed - Timelines for developing app - Cost of app - Technology needed on the golf course to ensure app is working - Any other relevant information