Hi ya'll! I have 2 New Zealands. Our female is 4 months and our male is 7 months. Right now they are both in individual 30 x 36 cages. Since it is winter and cold here we have not tackled building them a "run" to hang out in the grass. Our large garden has a rabbit proof fence, but is only 28" tall. Do you think this is tall enough? I would feel horrible if they jumped the fence and we couldn't catch them, but at the same time I don't want them stuck in their cages 24/7. Thanks!