No diastasis recti but some sagging under my belly button (middle only). Do I qualify for a 15 cm mini tummy tuck? (Photos)

Hello, I want to have a mommy make over surgery asap. I’m a mom of three and lost breast volume and I’m an AA cup. I want to go back to a naturally full A cup and for my tummy I have no diastasis but some sagging under my belly button. Right in the middle only. I don’t want or need muscle tightening just a skin only tummy tuck. I’ve seen pictures of “mini” tucks and scars are 20-25 cm long. Almost as big as the regular. I wonder if - based on my minimal change need - I could be a candidate for a true mini tuck with a scar of 12-15 cm max? Same for the BA what silicone size would suit me best. For your reference I’m 5,2. 120 lb my waist is 66 cm and my hips 85. Im rather petite. Thank you