new to forum, proportions and suggestions for lengthning

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Hello folks, I'm living in Montreal Quebec Canada, and studying in mcgill. all my friends are like 175-185cm, and the tallest one is 197cm; some fem friends are like 175-178cm, and most of are 168.
Lucky that my family is actually willing to support me, I have searched the website to see if there is a doctor who can do it nearby, and I got Dr. Marie Gdalevitch, does anyone know her? I was thinking to do it in May 2019, I have talk to her in person and asked about the price, the time period, and the maximum length I can gain. She said that it was about 80,000 CAD with precise nail(the internal one with magnetism), do you guys know if there's a doctor come with better price? It will take about 3.5 month for lengthening on femur, and she said 5-6 is very common for most of the people while 7-8 really depends on individuals.
I somehow want to gain an 8, I heard that the muscle stretching is very important to gain longer length and recover; I want to start stretching now so it can be easier at the time the surgery begins, but I don't know what exactly activity I need to do for lengthening femur, can you give some advice?Does the proportion looks good for 8cm? thanks.
https://imgur.com/6ZCZNzf
https://imgur.com/XDB5puj

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Did you choose to have LL surgery at Dr. Marie G in the end?

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 .

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Wht happened to u bro..did u do it??

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no not yet, plan for next year, jsut have some Curiosities about this dr. no idea how she's doing