Petite Asian, no kids, 10A/AA - would 160cc-255cc help me achieve my goal?

Hi Wishful
The best indication of the look you are wanting to achieve is from proper breast sizing in a bra and T shirt. Don't fret so much about the cup size and rather the look you are trying to achieve. As a rough guide 150 CC is a cup size. So my advice would be to go the 250 cc which is essentially the smallest implant I use for an augmentation.
Regards Damien

Implant selection is always best done in person, but based on the information given the implants you are considering should give you a nice result. Many surgeons have sample implants available that you can "try on" to get an idea of how you may look after surgery.