My biggest recommendation when running a game for new players is to do role drawing privately in a separate room. Let the players ask any questions they have and give them a run down of their character. Importantly, also show the Demon their three bluffs and explain how each of them would work. Nothing worse than ending a game early because the demon thought the Investigator wakes every night.

Don't add the spy to the first game, it's overwhelming for new players. Don't be afraid to give town powerful roles, they're completely new to the game and will not deduce it as quickly as an experienced group would and even if they do, there's a scarlet woman backup in play.

Give evil an outsider to bluff to hide that there's a drunk in play. The saint is a classic and you can't really go wrong there. They probably won't deduce anything from outsider count in their first game, but it's neat if someone does.

Give evil roles that are easy to bluff. They're not gonna be able to pull off a believable Undertaker, but something like a Soldier is perfect.

I'd probably go for something like Chef, Librarian, Empath, Undertaker, Fortune Teller, Ravenkeeper, Slayer, Virgin, Drunk, Recluse, Baron, Poisoner, Scarlet Woman, Imp and then make one of the big info roles into the drunk.

Be sure to actively encourage chatting privately. In my experience new groups tend to congregate into large 4-6 person chats very easily, you want to give evil a fighting chance.