Will I be able to achieve my desired look without a breast lift? Interested in silicone implant, under muscle. (photos)

I would like to get a breast augmentation using silicone implants under the muscle. I really want to avoid getting a breast lift. My breasts have sag and one is larger than the other. They look and feel almost as if they were deflated, and my nipples do not point down. Would I be okay with just the breast augmentation? I added some pictures of myself and some wish pics.