You are asking for an analysis of a very complex situation here, and one that really can't be answered in its entirety on this forum. This is because one of the most important pieces of information necessary to provide the best recommendations to you is absent here - that is a good examination of your breasts. Your surgeon has to take not only detailed measurements, more than just notch to nipple, but he or she will also need to get a good idea of the actual tone and dynamics of your breast tissues. This can only be achieved at exam. I can offer a couple of general points here that may be helpful, though. First, while it is tempting, and perhaps even sound rationale in some cases, to put in very large implants as a way to avoid doing a lift. You must bear in mind that the larger the implants, the greater the resultant stress on the tissues long term. If you are already starting with stretched, lax tissues, this may be made worse. Furthermore, you have to be certain that you want implants that large and the volume, dimensions, and proportions that come with them. If you do, that's fine; just know what's in store for you realistically. A second consideration here is placement with respect to the muscle. Again, it can be a sound plan to use a subglandular (over muscle) placement to your advantage in this setting, because that will many times "take up more of the slack" in the loose breast tissues and maybe avoid the need for a lift, but in reality only in those cases that are borderline anyhow. Again, this comes at some expense too, because the subglandular placement will also put more stress on your tissues, it separates some of the natural supporting structures of the upper breast from the muscle, and it is known to have higher rates of capsule contracture than submuscular or dual plane placement. In addition, the implants may be more visible, giving you a more obviously implanted appearance with possible visible or palpable rippling or folding of the implants. These are just some general considerations for you; there are many other things to consider too, such as textured versus smooth implants, round versus shaped implants, and which manufacturer's gel or implant type may be best suited for your tissues. All implants, while very close, are not created equal, and some have distinct advantages in some situations over others. This is why it is very important for you to not minimize these issues and to consult with an experienced board certified plastic surgeon who has access to all types of implants available and understands the subtle differences between them and can give you a realistic expectation of your results. Good luck.