Why not just put in every Dredd story that has ever been written then. The company said it was an 80 book set, so apart from greed, why go on past that. Do a 2000 AD one afterwards if they want, no problem at all with that.
You mention recent stuff Anderson, Lawless, Angelic, Deadworld, that's a bit too soon and I would suspect stepping on trades of those that will be coming out in the near future.