24 Year Old, No Kids, 40kg (90lb) Weight Loss - Tummy Tuck and Medial Knee Lipo - New Zealand

I'm booked for 3 weeks time for a tummy tuck and medial knee liposuction (I have always had fat knees).
At my biggest I was 128kg (282lb). I'm now 86kg (189lb)
I lost the weight through diet and exercise and have maintained the loss for 2 years. I could be skinnier but I'm pretty happy with where I am and I go to the gym everyday already so I can't do much more if my body doesn't want to be any smaller.

I'm starting to get nervous now. I also realised I'm going to have my period either on the day of surgery or just after - has this happened to anyone else?? Was it alright?
For recovery I'm going to stay with my mum. Is a recliner for sleeping 100% necessary? I don't think she has one. I'm not getting muscle repair, just the skin.

Just adding some more photos

I sent my PS some photos of tummy tucks that I think look good, and one that I don't like the technique of. I'm wanting him to confirm whether my expectations are realistic. If I'm hoping for too much I need to change my expectations now rather than being upset later.

In terms of my procedure, I'm getting a full tummy tuck with no muscle repair and no lipo. I have no ab separation or hernias and the skin above my belly button is lean so there isn't need for lipo there. I'm a pear/hourglass shape so store most of my fat in my thighs. I mentioned my chubby knees in the consult so he added some to the quote for lipo there and I decided to go for it because a) I'm already paying for the general anaesthetic and taking time off for this anyway b) can do all the healing at once c) have been the same weight/size for several years now and my inner knee fat just is not budging and I've basically realised it probably never will.

I havent worn anything above the knee in over 10 years (and I'm only 24!). I can't even imagine being able to. I'll put up some photos of my knees in the next few days. Basically it's the inside and sort of the back of my knee that is very flabby, like a pocket of fat that sticks out from the rest of my leg. My mum has it too, unfortunately it seems to genetically be my leg shape. I can have abs and still have these fat knees!

All in all, I'm excited and nervous. I never knew for sure if I would get the tummy tuck after losing weight but now that Ive had the loose skin for 2-3 years I've decided I need to just do it and stop wasting time thinking about how much it bothers me/does it bother me enough/is it that bad. I havent shown anybody my stomach in about 10 years too. In terms of intimacy with a partner, you bet the lights are off.

All of that isnt actually what bothered me the most. I didnt mind that I had to hide my lower tummy all the time (high waisted shorts at the beach) because I'm rarely undressed in front of people anyway. What actually started bothering the most is knowing that my abdomen is lean from working out lots, but still never looking as good in clothes as I felt I should because of this pouch thats just floppy. Also at the gym the loose skin makes my tights fall down all the time because they cant cling to me properly. When I do pushups and things it all sort of just hangs down.

It feels like its not real yet. I cant even imagine actually having a flat tummy and not having these chubby knees. The idea of wearing a crop top and a skirt above the knee is just mind blowing to me.