You've done your research so you probably know most of what I'm going to say but just in case, here goes a list of the basics...
Make sure the temperature never gets too hot. Chinchillas can handle cold much better than heat.
She should only be fed hay and good quality pellets and plenty of fresh water until she is about 6 months old, then you can gradually introduce the odd treat like a raisin once a week. I have an apple tree in my back garden and I've taken off a load of twigs, cooked them in the oven at a really low temperature for ages to dry them so they won't get mouldy and I give them the twigs as treats and to let them wear their teeth down. They were a bit skittish at first and don't really like being petted but they allow me pet them now while I hold the stick and let them chew it.
She will need a chinchilla proofed space to run around in for at least 30 minutes a day. She is going to chew everything so be prepared for that. I will have to replace all the wood panels in my hall and bathroom before I return my apartment to my landlord at the end of my lease!
If you're only getting one chinchilla. she will need lots of attention and play time.
She only bathes in dust and her bath should not be made of plastic. I generally give mine the bath about 2-3 times a week.
She will need her cage cleared of poohs about once a day and fresh bedding at least once a week. I use a mix of fleece and sawdust.
You can't have any plastic near or in her cage. She will probably chew it and it could make her sick.
They like a quiet place to sleep during the day and are usually most active around sunset and sunrise.
Anything else?
Good luck and enjoy
