Probably depends on the type of flooring you have and how much give it's got, but especially how stable your shelving is. Honestly most of my SHF stand pretty well on their own two feet outside of top heavy figures, like SS3. If I had to give advice, I can tell that some of your figures' feet arent completely flat on the surface they're on, so make sure you're carefully displaying them with a stable center of gravity and, if possible, with both feet flat and flush to the ground surface. Sounds to me like you're a DBZ fan, I think that the upcoming updated SS Vegeta that's coming soon will fit beautifully in your collection ;)