Thailand Mini TT

Ok so I am a 50 yrs old mum of 4. I weigh 52kilos and am pretty fit. I work out every other day but nothing can get rid of the extra skin I have from giving birth to 4 very large babies. I had my last child at 41. I have tried everything to tighten my stomach but honestly nothing is ever going to tighten the skin.
So I am going in to get a mini TT. Travelling to Thailand to have it done as Australia is super expensive. I have been reading all the stories on here for about 6 months now and am getting very excited. Still have 6 weeks before I go but after such a long wait I am thrilled that it's just around the corner. Have included some yucky before pics so I can look back afterwards and see the diff...

5 and a bit weeks until I go to Thailand for my mini TT. I am madly exercising and keeping my diet in check. I am hoping for no lipo and I don't think I will need any muscle repair as I can feel muscles under my skin. Concerned about how long it will be before I can get back to exercising after the op. All these questions but because I am have surgery in Thailand I can't ask any of them until I get there because the dr needs to see me to answer them and that will be the day of my surgery.

Trying to really watch my diet and exercising every day now. Can anyone tell me if there is anything that I should buy before I have the op? I can get the CG from the hospital. Should I use scarguard or mederma and when do I start using them? What about bio oil, has anyone used this? It's getting exciting...yay!!!