First the first journey.......I would not feed the cat before travelling and remember take some newspaper, kitchen towl, litter tray and spare litter for accidents or needs on way. Certainly take water and a dish for stop offs.
For Nova, if she is just a little kitty, an ordinary carrier should be fine. Sometimes it helps to take a towel to cover the carrier with if they get too upset but as for the other one take water and emergency cleaning things. Just do not open car doors if cats are not secure in carriers, Never , never, never!!