Nichola, I haven't had a tummy tuck or such, however a couple of years ago I had some necessary breast surgery. Discussing it with the surgeon at a follow up appointment, I expressed a certain wistfulness that I had hoped to wake up to a rejuvenated pair of bosoms, having lost some volume when I trimmed up, quite some time before my then recent op.
Her response was very enlightening.
She advised that she could render my bobbies as full and pneumatic as I wanted them, however, as an initial cosmetic procedure, for someone, post weight loss, she wouldn't recommend it. Her very strong recommendation was for anyone considering a surgical route, to consider their upper arms first. Whilst not as glamorous as bosom, or face, they are most easily and most frequently on show, and in her experience those ladies who had their bosoms done, without tackling arms, chest and throat, where required, regretted their starting point, as the overall look didn't "flow".
As it was I was offered a bit of reconstruction around my op site, but I declined, because without enough available fat for a fat graft, I didn't want an implant that's could go wrong at a later date.
If you really want to do a bit of body tidying, maybe best to discuss the impacts - physically and importantly, mentally with your chosen surgeon.
Good luck with it all.