Those are gorgeous pots, Loretta!
I don't really think about longevity for most combos. Almost all of them are from plants started as cuttings, so they can be trimmed if needed, &/or repotted if or when they're no longer happy as a group. Many of the plants get put in the ground for summer, so fall is the time when a lot of new combos come together for me, so they can be saved for winter.
Some are more permanent, like the Dracaena pots.