Thank you for the question. Generally speaking, it is always best to achieve a long-term stable weight prior to proceeding with body contouring surgery. Doing so, will increase the safety of the operation, will likely improve the outcome of the operation, and will decrease chances that additional surgery will become necessary subsequently. In my practice, I do not ask specific patients to achieve a specific weight or BMI prior to proceeding with tummy tuck surgery. I simply ask patients to achieve a long-term stable weight where he/she feels comfortable and does not expect significant fluctuation postoperatively. As you know, recruiting other professionals such as personal trainers, nutritionists, physicians who specialize in weight loss concerns etc. may be helpful to you. When the time is right, seeking consultation with well experienced board-certified plastic surgeons will be your next/best step. Best wishes.
In general, a BMI of > 30-32 does increase the risk of complications in a tummy tuck. The specific complications that can be increased include wound healing issues such as separation of the incision line as well as increased risk of DVT (deep vein thrombosis). Make sure you consult with a board certified plastic surgeon to review your options.