Hey Runt,
here is my advice: do 5cm, do it as soon as you can, with Dr. G.
Get it over with.
I normally tell everyone not to do this surgery. I did it myself and I think it fks up your mind. But in your case I make an exception.
You are young, you really are very short, you seem willing to take the pain for the gain and your parents seem to be able to pay for the surgery.
I did the surgery at the age of 45, additionally handicapped by a severe knee injury, and I walked fine after 5 months (lengthened around 5,8 cm).
You are 26 years younger, with no injury handicapping your recovery.
if you do 5cm, here is the timeline I expect from you, if you give it all that you got:
1. surgery first of may (i chose a random date) , initial distraction 1cm.
2. starting of lengthening: around 6 or 7 of may. After some days of adjusting you lengthen around 1mm per day, some days maybe slower.
3. 5cm reached: around 15-18 of june.
4. Be very active, work hard: you will be penguin-walking early september, but you will come up with some explanation.
5. By the end of september, you will still feel a bit weird when walking, but nobody else will notice.
Do it!
Cheers
OBG (you can read my LL journey in the diary section)