Austin's eloquence will be an interesting side to the deliberations. It's something I feel like Brad usually has, except when he discards it for the GotY discussions of his personal favorites.
I wish Vinny would play Undertale, though. Out of everyone else, I feel like he would appreciate it the most. Perhaps Alex, too.
5 hours sounds like you were right at the end of your first playthrough. It can be pretty simple to skip everything quickly enough but, if you don't want to, I'd recommend watching the Normal ending on YouTube (which is likely where you were headed) and then going for a Genocide Route playthrough, which is a completely different experience and one of the darkest I've seen from the player's perspective in any game.
Though, one should also go for the True Pacifist ending... it's rare that every ending of a game is worth seeing firsthand.