Hello. With all respect to your opinion about your height and desire to become taller, I would suggest the following:
1. To get help from a psychologist to make sure you are ready for LL surgery mentally, and whether this will really improve your life quality, or maybe you can just get rid of obsession about height and be happy with it.
2. Try and visit LL centers, see patients who had this surgery and seeing treatment, or recovering/have recovered. Their real experience will give you more info about difficulties of limb lengthening, and you will have necessary material to decide if your obsession outweighs all the pain, long stressful months and associated risks.
As for recovery, in methods like Ilizarov/LON (methods which have an external fixator), the patients may be able to walk after 1-3 weeks since operation. But it varies from patient to patient. Some patients experience pain and difficulties, use walkers, or crutches, others have less pain and walk more easily.