Too big for a tummy tuck? (Photo)

Thank you for the question and pictures. You will likely be a good candidate for tummy tuck (standard or extended) surgery at some point; definitive advice however would necessitate much more information. Best to do this operation when you are at your long-term stable weight. Doing so will help improve the outcome of the procedure and minimize chances that additional surgery will be necessary subsequently.
Generally speaking, the “ideal” patient for tummy tuck surgery is one who has completed pregnancies, is psycho socially/emotionally/financially stable, has an excellent social support system surrounding him/her, is capable of arranging enough recovery time, does not smoke and who has reached a long-term stable weight.
 When the time is right, seek consultation with well experienced board certified plastic surgeons who can demonstrate significant experience achieving the types of outcomes you would be pleased with. It will be important to educate yourself about the potential risks/complications associated with surgery and have a good idea of realistic expectations. I hope this, and the attached link, helps. Best wishes.

It is best to be in your best shape before cosmetic surgery. Diet and exercise are important in achieving your goals. However if your photos are the best shape you have been in, then we can deal with that. Best to see a board certified plastic surgeon working in a reputable hospital