Well you need single model stream but still you need a chat; wowza just gives video, but not the chat. I see you asked this already in 2011 and in 2008:
https://gfy.com/showthread.php?t=1034133
https://gfy.com/showthread.php?t=807501
That's like 5 years you want to setup it?
I know several developers who do this stuff "cheap", perhaps I hit you in ICQ/mail to give contacts.