And lots of hiding, covering for the Corys please. So they can escape from some unwanted nipping or harassment from the Tiger barbs if they need to.
The store tend to use not enough covering/hiding since they need to show the fish to the potential buyer. Unlike the store you don't have to do that. Just keep some open area in the front and you'll see them when they feel comfortable. As a matter fact, you'll see more if there are enough hiding/covering in the back and side so they know there are place to escape so they can venture out more.
Although I never kept Corys with Barbs but I'm sure Corys would appreciate lots of cover, either with themselves or with some tankmates.