If you want to do tibia then go with Dr. Donghoon, he offers LON external (ilzarov method) or precice for tibias, as well as obv precice for femurs. Most people here including me, did LON external for tibia. Average gain is 6 cm here, but i've seen others here going to 7-7.5 (although isn't really recommended).
PT, and surgery here are elite, as i'm sure you are all aware. I myself got done with 6.2 cm on tibias and I was walking naturally fine around korea like a tourist for hours with no issues and no real fatigue. (Only going down stairs looked a little awkward). This was around the 10 week post external removal. I am now doing femurs here at Donghoon.
Every single person i've met has made a full recovery and are thriving whether it is tibias, femurs, or quad. Haven't seen a bad outcome here, and donghoon has a 0% complication rate. There was even a patient with a complication that came from Paley that had to be fixed up here though I do not know there full condition. I strongly recommend donghoon especially for tibia surgery, especially if you are looking to do the cheaper option of LON.