I am a photographer and would like to offer a service that would have a person behind the computer and a photographer. The photographer is at an event and a workstation (the person behind a computer) is near (ex. 50-150 m) and can 'instantly' receive the photos on their PC wirelessly without the photographer having to send it, via Snapbridge etc. The workstation can download all the photos in high-res and upload to 3rd party websites (FB, gallery and newspapers etc.)
I am searching for products, is have apps, programs etc.

The only solution I had a CamRanger (on camera), iPad which is connected to PC/laptop via wire, and on the PC, the person finds the downloads folder of the CamRanger App, but that's super hard and time-consuming. 

My question is this: what are the best mid to high range wireless tether systems?