Implement Tokbox (OpenTok) into Titanium App

Looking for experience TITANIUM and TOKBOX (OpenTok) developer.

Existing mobile app is built on Appcelerator Titanium SDK 5.4.1. Looking to add video chat capability.

Customizations includes:
– Permission to enable group video chat by certain users
– Parent API and child APIs for multi tenant usage tracking (interfaces with existing portal build on Laravel)
– Web access call icon to be embedded into website
– Screen sharing
– Permission to enable call recording for certain users.

Along with your response, PLEASE INDICATE THE ESTIMATED DURATION FOR THIS PROJECT.

Please provide sample project on Titanium if available.