I would be fine with this, it looks like it could take some time to realistically get the full group together.

On our end Thorne and Anvil would likely be chasing down leads for a good while, finding out what we can of the cult's activities and either disrupting them or observing as the situation calls for. Perhaps we pinned down the location of a major operation or base, asked for additional hands, and the killers of the assassin were asked to join us.