I've been to bali twice last year and had the opportunity to do a webinar (not through livestream) with about 50 participants and I got good results. It all depends on the quality of your broadband connection, especially upload speed. One thing for sure: try to avoid internet cafe, because their upload speed is always bad.
MikeFys - Apps Manager
Apps for fun, apps for chat, or apps for interact?
Try Whatsapp for Pc - http://www.whatsappfor.org