I'll just say this now though escavalier can 3hko bastiodon with iron head and stone edge is a 4-5hko. Altaria can 5hko bastiodon with fire blast but Stone edge always 2hkos unless you roost. Yes this is max hp max special defence bastiodon but IMO that's the best set by far as otherwise a lot of powerful special attackers can overpower you. It's the standard set too but now that I think about this escavalier and altaria with a sandslash would make a really good offensive core as they're only troubled by bulky ghosts which can be taken care of too. If bastiodon does decide to set up rocks on escavalier it does nothing all match as stone edge does very little and looking at how this is going to be setup bastiodon looks like a very valuable pick so I wouldn't want to use a physically defensive spread as eq, cc will still ko while it can take Draco meteors, fire blasts and thunders so much better.
And yes you can change ur suggestion.