I'm going to be flying alone, to get femurs increased by just over 3 inches  , 7.5cm/7.95cm  , and making up the rest with glucosamine/stretching (i might, with stretching and glucosamine , be 175 or more...half a cm glucosamine, half a cm from proper stretching , improving posture, esp given i have short legs and a long spine and neck worthy of someone much taller).

How do i plan on keeping it secret?

First 3.5 months, i will lengthen 7.5/7.95cm
1.5 months, walking, lots of physio, walking walking walking until my gait is 95%.

Then i will wear flat shoes, and, when around family, make sure i slouch. Before flying off, i will wear shoes with one inch lifts, and , slippers of 1 inch at the house.

As family begin to get more used to it...given i am very skinny, i'm going to pile on a lot of weight on the legs and body and hit 200lbs

I'm also getting other surgery done for my face.

So in the end, i'll begin standing taller...and look much heavier / muscular, and they'll confuse it with that.

I've been away from home for 2-3-4-5-6 months at a time, so i'll play it cool when away, text regularly etc.

Femur scars are far more subtle , fewer of them, and i'll try to get Rod removal sometime in 2024 , and then get laser etc, anything to fade it away so nobody will ever know.