One point to make please... I had a room neighbour and she was on the small side. Now I was quoted by Dr. Sanguan to have more then enough and I started with 5 ½" depth which diminished pretty quickly to just under 5" at present.
My room neighbour was told if she does not have added skin grafts taken from inner thighs and or tummy she will be a shortish, 4".
By now, all things being equal I guess she also will have shrunk, and I'd guess to 3 ½" !
So - yes, there are options if you are on the small side, and also DO NOT FORGET CIRCUMCITION if that's your case!
In the end if all fails some girls decide to have secondary (after inversion) colovaginoplasty, often after 1 ½ years.
It is a pretty much more invasive op then inversion, as your tummy needs to opened to gain accessed from the inside to your sigmoid colon, leaving a long scar of about 30 odd cm.
Axelle