From experience I know subKyurem is a big threat to this team. It can set up a sub on 4/6 members on your team and can hit every member while only Tyranitar, Stoutland (in sand) can outspeed and break its sub and they still have to take a Ice Beam / Earth Power. Starmie can break its sub but Kyurem can just PP stall with pressure and Roost. Therefore I'm going to suggest Gyro Ball > Thunder Wave like many others. This still isn't a 100% solution since Gyro Ball has low pp, but you can atleast threaten it out twice and OHKO it if people think they can just Roost on a Gyro Ball. I also want to second Brii's suggestion on running Ice Fang on Stoutland over Crunch since your team does like threatened by dd dragons. Also, if you decide to run more speed on Landorus-T, you might want to run 168 evs with Jolly instead of 112. This way you can surprise Kyurems who think they can Ice Beam you / substitute on Lando-t by outspeeding (285 speed Kyurem) and OHKOing them. Consider that ev spread if you want another way of dealing with Kyurem.
Hope this helped. good luck. luvdisc'd