I would love to develop the site. Its up to you to decide what kind of streaming do you want (RTMP, HTTP), how you would want to encode stream, the quality, video dimensions and the target devices. Do you want to extend the target to mobile devices i.e iOS???
Of course you will need a dedicated server with enough storage.
If you really want you can inbox me further details at this email address and i can present you with a proposal: firstname.lastname@example.org