I am going to reiterate what others have said here, and dispel some of the generalities, not all dive shops have heavily chlorinated BCDs, the shop I teach at has pool BCDs, and rental BCDs, so when we sell off rental gear , it was only used in open water. As a newer diver who probably did their training in a jacket style, you will be more comfortable at the surface in a jacket style, as you will float upright at the surface, however, it is harder to achieve horizontal trim with a jacket. A lot of people recommend a bp/w, and it is a wonderful setup, I love both of mine. My single setup is a DiveRite transplate with a Rec EXP wing and integrated weight pouches, trim pockets and STA. My only modification to this rig, was changing the cam band straps and replacing them with the ScubaPro straps. I travel with a ScubaPro Knighthawk, and it is a great BCD. I have had women your size in class, and the XS Aqualung BCDs we use as pool and rental seem to fit them well. It is you gear, your choice, dive what makes YOU comfortable.