Two orphan squirrels! Advice?

My sister and I rescued a baby squirrel from my cat yesterday night. Then later on the night my cat brought in another baby squirrel into the house.(She brings anything indoors) I don't know much about raising baby squirrels nor what to do with them. I want to take them to a wildlife rehabilitation center but the closest one is an hour and a half away. Plus the fact my dad is acting as if he wants to keep them as pets. I've heard stories of mother cats acting as surrogate mothers to squirrels. It so happened my mother's cat, Jiji was nursing at the time. She is a very kind cat who accepts any animal around her so she easily accepts the two baby squirrels. I let them nurse off of her every hour or so and during the times she's too busy, I feed them milk (after boiling and cooled abit) with a syringe. They are doing well so far but is there anything else I should know or do?