Thanks guys!
I would love to do 18" cages for all of mine.. But cost is a factor (as well as space). My collection should top out at 12 animals, with 5 of those being animals that will need 4' cages... I'll have to see how i can manage my space and my funds to make it happen. I don't have a problem with spending $300 per cage, but my husband might think otherwise lol.