Ask among attending volunteers if anyone would be interesting in taking the lead over live streaming.
Here is the equipment that we used at Wikimania: https://docs.google.com/spreadsheets/d/1IjvIy1t8UbjmOiaTflRrDWuQR8qnShbT66UGBv3gJZ4/edit?usp=sharing
What we borrowed from the technology pool can be seen here: https://se.wikimedia.org/wiki/Projekt:Teknikpool/L%C3%A5nelista
I would suggest to borrow the Dell Laptop since that's the most powerful one and can handle the livestreaming easiest.
If we want to stream live, I think it would be nice to pre-create a youtube-video with a visual as we did for Wikimania-sessions. But, I don't know how to do it (but can learn I suppose :) ), but above all I don't have admin-access to Wikimania Sweden youtube chanel. Could you @Ainali create it before Saturday?