If you are considering breeding, I recommend doing a TON of research, there is so much to learn. I have been breeding for 5 years and still learn things everyday.
Breeding is a HUGE committment and I'm sure any other breeder will tell you there is a LOT of heartbreak involved, it's not all cute fuzzy little animals.
First, TONS of research..
Second, you will need to find high quality chinchillas with a pedigree, it is a MUST for breeding.
Find a reputable breeder near you that can mentor you.