The scar only needs to be as long as the extent of skin laxity, so you would not need a side to side incision.
You may want to consider having the breast augmentation and tummy tuck performed at the same time.
Not only will this save money in the long run, but the implants can be placed through the tummy tuck incision without creating additional scars on the breast.
Find a plastic surgeon with ELITE credentials who performs hundreds of tummy tucks and breast augmentations each year.
Then look at the plastic surgeon’s website before and after photo galleries to get a sense of who can deliver the results. (Kenneth B. Hughes, MD, Los Angeles Plastic Surgeon)
The length of the incision will depend on the amount of skin removed, whether it is a mini or a full abdominoplasty. Looking at your photos, I would recommend the full abdominoplasty, not the mini, and thus you may need the hip to hip scar, otherwise you may end up with “dog ears after tummy tuck” or puckering of the tissues at the ends of the incisions.
I think if you only do the mini, your results will not be optimal because of the skin laxity around your belly button. Be sure to ask your surgeon what type of abdominoplasty he plans on performing. Doing both procedures at the same time is certainly do-able and will likely save you money, but before deciding on placing the implants through the abdominoplasty incision, be sure to discuss this with your surgeon to see how much experience he has with this approach, and what the pro’s and con’s are to this approach. (Amy T. Bandy, FACS, Newport Beach)
It will be very hard to get a good result with a short scar if you have a lot of excess skin above the Umbilicus. If you keep the scar short the excess skin will bunch up and gather at the outer corners. This bulging contour will be very unsightly compared to a scar. Yes I understand your concerns regarding the scar, but it is more important to have a better contour. At the end of a year the scar will be visible by not prominent (Naveen Somia, MBBS, PhD, FRACS, Sydney Plastic Surgeon)
Short scar abdominoplasty
Only a physical exam will reveal how long the scar should be. It will definitely extend beyond your C-section scar. A board certified plastic surgeon should be able to produce a more aesthetically pleasing, fine line scar so I would not focus on the scar length but instead on the benefits of the procedure.
The goal is to correct the bulging, remove excess skin and tighten the musculature and I am sure that you would not want to compromise the desired outcome. (Robert L. Kraft, MD, New York Plastic Surgeon)
The incision length required is directly related to the amount of skin removed. By the photos you have excess skin above the umbilicus which would require a formal abdominoplasty. this would be a longer incision than 1 inch beyond the c section scar. Seek out a board certified plastic surgeon to evaluate and offer opinion. (Robert W. Kessler, MD, FACS, Corona Del Mar Plastic Surgeon)
Close but you could have a slightly shorter scar incision for your TT. Best to have your chosen PS draw it on you in the office. So than you can understand the appearance. (Darryl J. Blinski, MD, Miami Plastic Surgeon)
It appears you have quite a bit of skin looseness and would be best served with a full TT, so hip-to-hip. Using your thumb and index finger, pinch the skin up as tightly as you can from top to bottom below the belly button. Then let go and repeat the process off to the side moving about an inch to the side each time. Once you run out of excess skin to pinch up, you will know where the scar should stop. I am betting it is in line with your armpit. (Ronald V. DeMars, MD, Portland Plastic Surgeon)