I like them pretty well.
Trey and Tavo are cute. Tora(h) is a bit too much like naming a child Bible or Koran to me.
As siblings, I think they're fine. Though they all start with the same letter, the sound of each name is different enough that I don't think it'd be a problem. (I love a bunch of names that start with L, though, and thus I wouldn't be concerned about the idea of children with the same first initial.)
Middle names:
Trey AntonioTrey IsadoreTrey FlorianTrey HadrianTrey Benedict
Gustavo JarvisGustavo MariusGustavo RainerGustavo WillardGustavo Cleon
Tora Lione
Tora Merridy
Tora CandelaTora BeritTora Crane
Array
"Phineas. That's an interesting name."
"Yeah. It's Latin for 'kick me'."