Large(r) implants can be just fine, IF your anatomy allows.
You are short, but if your breast and chest anatomy allows, large implants can give you the results you wish for, though your surgeon must be comfortable with using large implants.
Some surgeons refuse to accept that most women who have implants placed either above or (more commonly) below the muscle will have some degree of implant position drop over time. This is regardless of the implant size, but may indeed happen more readily with larger, heavier implants. Proper pocket...