I finally did it... I put the big cage back in storage, and switched my kids over to the 685 I had upstairs. I may sound insane, but I never realized how SMALL the 685 was until I pulled it back out! Course, this is also compared to my cage that is 36x24x36 as well...

I guess with only 4 kids now, I really don't need a monster cage anymore!
I'm probably going to be selling the big cage (no need for something that big anymore), but I'm waiting to hear back from someone about it first. If anyone's interested, here's a pic, and I can give you all the details if you want them. I hate to part with it, but, I don't plan on getting new kids for a few years after these guys are gone, so I really don't need it anymore.
http://gracejr.250free.com/cages/everlast.html