I know I'm not particularly welcome in these parts, but since this is just a one off thing for fun, I'll chime in!
Group 8 would be my choice.
David Von Erich would 100% be your top babyface, but after that you'd need to do some trading cause you have pretty much no one else worth a damn on the babyface side. Potentially Don Kernodle and Jesse Barr, but there is a huge disparity in star power between David and those guys. Maybe Bret Hart gets an early push as a technical babyface, but it would be lower card at best.
But oh man, David having a villains gallery consisting of Roddy Piper, a Heenan Family consisting of Patera, Saito, and maybe Rose & Somers put together a few years early. Not to mention a Russian team of Ivan Koloff and Nikolai Volkoff, Austin Idol and Killer Khan floating around, and maybe we lean into Scott Irwin's biker gimmick a little more and give him Ellering as a manger.
As you mentioned @LowBlowPodcast, a lot of fun pieces in that group.