Thanks for the question.I recommend you a Tummy Tuck, to get a flat abdomen and waist and back Liposculpture, getting better curves especially in the waist, improving your body contour.
Finally, I suggested take the fat we get and transfer to the buttocks and hips, to mold them and get better volume, contour and butt projection, is that we know as "Brazilian Butt Lift" (BBL).Kind regards
You do not have enough pictures from different angles to make that judgement. But given your body frame rib removal combined with liposuction of the flanks has the best chance of making your anatomic waistline more narrow.
It appears that aggressive liposuction of abdomen and flanks would help to improve your shape. Breast lift or reduction may also be considered, but I am not sure whether that is your issue? Regarding BBT, it is procedure that concentrates on buttock augmentation with fat grafts and shaping of flanks and thighs in addition. We will need a profile and back photos to give you advice on that topic. In any case, no need for rib surgery.You should seek a consultation with a board certified plastic surgeon experienced in body contouring surgery for detailed evaluation and discuss your options. Good luck.