Hey McSirTuna, I think this is an exciting idea. You have a nice collection of games and your willingness to create/share more pinball content is a good thing for this hobby.

I would like to make a few suggestions based on watching your past streams- as well as watching streams by others:
1. People are going to your channel to see the game, that's a given... But many of them want to hear from you. This is basically a TV show, don't be afraid to show more energy/personality while you play- remember, people watching want to be entertained- some of that will come from your game, but some of that should come from you.
2. Try to talk more strategy while you play. Your channel will likely be viewed by people who like pinball, but aren't heavy in the hobby. Many of these people think that pinball is nothing more than randomly hitting a ball around, with some flashing lights. If you periodically tell people what you're trying to do, it can help them to understand what's going on, and help them understand the game to root for you. You may occasionally repeat yourself throughout the night, this is fine since people regularly leave and join the twitch stream. Many people watch sports for the game, AND for the player(s).
3. I think doing this on a Saturday evening is a great idea in terms of getting viewership. A lot of people have plans during the day, but at the end of the day, they want to sit back and watch TV. I'm not sure of the exact dynamic, but I think (in general) you'll have more viewership in mid to late evening, vs during the day. This is something you'll be able to better assess once you start doing a few episodes.

Your willingness to expand the hobby, and put out new content is awesome; and I'd love to see this be successful. Please let me know if there's any way I can help you with this project.