Dont worry at all. Prekill pinhead crickets an keep a small water dish. Outside of that, they should be happy as long as there is lots of anchor points.
I have that one pictured 1.5" that literally just arrived an hour or so ago and i have a 3/4" one as well. Slings are fragile but easy to keep imo
those r called "super stackers". I get em from wal-mart for 88 cents each in the school supplies section. Of course i drill lots of strategically plced holes and i hot glue one lid latch to the lid which creates the "door on a hinge"