my biggest tip for a tummy you're not so comfortable with, is fake tan! i know its not a permanent fix but it makes the world of difference, the same with cellulite i think it covers that a bit too.
a tummy tuck is something im petrified of, as the pain from a c section was unbearable when recovering and its quite similar pain apparantly, plus the scar - thats a very long one, hip to hip sometimes (id have one if someone was paying dont get me wrong)
but i think theres a lot you can do to make yourself feel better about it or to try first (obviously depending how badly you feel about you're tummy of course)
thats just my opinion
xx