In all honesty after 7 years i wouldnt expect any less, you did 7.5cms but to add another 10cms is extreamly wrong for you. You will definetely run into complications during and after your lengthening.
For you to say you are doubtful of unicorns experience with guichet is quite disingenuous and one of the main reasons people are upset with you.
Excuse me for posting so much on your diary but just take this as a note, After this if you do go through with another 10cms on femurs and suffer massive complications even such as pain for the rest of your life you wont be able to say you were not warned.
I genuinely dont want you to destroy your legs regardless of what you say about unicorn and that you defend dr Guichet after his fraud and scaming actions towards us.
Theres a chance once you reach 10cms you will begin to realise how big a mistake you are making . You dont seem to realize that even another 4cms in the same segnent might also do a large amount over streatching of joints placing too much inwards or pulling pressure on the hip and knee joints and also pain on your quadriceps and hamstrings origin and insertion points on your bones.
The safest thing to do is to do another 5cms on tibias and possibly not with Dr Guichet because he seems like he doesnt have the confidence to do tibias.