Tummy tuck and male mastopexy combined?

I'd suggest you see a board certified plastic surgeon with experience in this type of surgery. Combining procedures often makes sense in the right person, although staging it would be perfectly appropriate.  With the tummy tuck, most of the time the muscles are tightened if there is a laxity of the abdominal wall.  I would wait for weight to be stable for 6 months before proceeding with surgery to ensure an optimal result.

You should speak to a board certified and experienced plastic surgeon to determine whether the two procedures performed at the same time would be safe for you. It is possible to have them done at the same time in healthy patients. It's common to have diastasis recti repair performed during a tummy tuck, but it's not necessary. It would only be performed if you require it. Trust your instinct. Examine their credentials and experience and if you feel comfortable with your surgeon, then they're probably the "best" one.

The two can be performed together by an expert.  Weight loss patients do not necessarily need muscle tightening.Find a board certified plastic surgeon who performs hundreds
of body contouring procedures and male breast reductions 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 Hughes, MD Los Angeles, CA

Combining the procedures of tummy tuck and mastopexy is
very commonly done and is safe in most situations. Definitely discuss your concerns with your
board-certified plastic surgeon prior to proceeding as some health conditions
may present situations in which it would be recommended to stage the procedures
rather than do them in the same do. Most
of the time, patients are able to do them in the same day if they are otherwise
healthy.Regarding the muscle repair with the abdominoplasty, if you
have had this much weight loss, then chances are that you may have what is
called rectus diastasis, which is separation of the rectus muscles. These are the muscles that produce the
six-pack appearance in body builder patients.With weakness or separation of these muscles comes weakness of the
abdomen producing the abdominal pooch that everyone finds unattractive;
therefore, to address this, the muscles are generally recommended to be
tightened during abdominoplasty surgery. Regarding choosing your plastic surgeon, I would be sure to
choose a board-certified plastic surgeon with specialty experience in this area
and even fellowship training in this area if you can find one, as well as see
the surgeon’s before and after photos.

A tummy tuck is a common procedure for men after massive weight loss.  This may include a diastasis repair because of weakness.  As for the chest it is quite possible to have them both done at the same time.