You need to be carful that they don't get wet,
They can't regulate their body correctly if allowed to get to wet and it can kill them.
A bath for chinchillas is Buying Chinchilla dusk and putting it in a Duster or any large bottle with a big mouth so they can get in and out easily.
Dusting should be limited and not left in with them as it can irritate their eyes.
I would recommend buying from a breeder as you get better stock then a pet store,
They need cooler temps as higher temps can cause them to drop dead of a heart attack.
80 degees F is to hot, Remember their teeth is very important, the last thing you want is a broken tooth, Don't over feed sweets, and make sure they have lots of things to chew on,
I like the white colors they seem to be harder to find..
chins I use to have. chili, gypsy, spot, dittie and babies