Why would be the best route for me to achieve a more contoured figure? Possible breast reduction, tummy tuck or BBL?

Liposuction, combined with the TT, will allow you to have stubborn fat resistant to exercise and diet removed from unwanted areas. A TT with muscle tightening will create a flat abdomen and would also provide the benefit of placing your incision along the lower pubic region. The TT also creates a more youthful belly button. If the waist was smaller at one time, the waist can likely be reduced to those same measurements or smaller provided the muscular and fascial integrity has remained the same.
The TT will remove the stretchmarks to the level of the belly button. Stretch marks above the navel cannot be removed during a TT. However, because the skin is lifted and repositioned during the TT, stretch marks above the navel prior to the surgery will be less visible following the TT, as they will be moved to a lower position. A BR/BL could be performed during the same surgery.
The recovery period after a TT is usually well tolerated by patients. In most patients, the discomfort after the TT is controlled by oral pain medicine. The day after surgery patients should be able to perform daily living activities and should at the very least be up and ambulating to reduce the chance for the development of blood clots. Many patients may want assistance in the home or hotel for a week or two particularly if they have young children.
If you want to have a BBL, stage the procedures and have the lipo and BBL performed first. Three to six months later, have the BR/BL and TT. Consult via email or Skype with a board certified PS to discuss your options.

Thank you for your photos and questions.  You appear to be a good candidate for a breast reduction as well as a tummy tuck with liposuction for contouring.  I don't believe liposuction alone will give you the flat stomach you are desiring.  A tummy tuck will remove excess fat and skin as well as address abdominal wall laxity.  Liposuction alone will only address fatty pockets.  You can add a BBL if you wish. Sometimes breast reductions are covered by insurance.  Check with your carrier for details.