Nice sized cage, but being on wire all the time will hurt their feet pretty badly. Go to Home Depot and get some of those peel-and-stick 12"x12" floor tiles and cut them to fit the shelves. Might want to take out the grate, if you can, on the bottom floor, too. They like to dig so taking out that grate will give them things to do other than chew on their stuff.

Hammocks made out of pillowcases, bandanas, etc work great and they like to sleep in them.