Hello,
Please approach this from a purely theoretical standpoint, for now, discluding cost and other factors that aren't strictly relevant to the actual lengthening of my bones.
First, here are some stats on me:
Height: 177cm
Wingspan: ~176cm
Age: 18 since March, Growth Plates likely sealed.
My father is at roughly 198cm tall, I do not know my mother so I don't have her height. I wasn't brought up very well and would often get starved, I think my growth was severely stunted for this reason.
My goal height is 195cm. Give or take one or two centimeters but preferably 195cm or above. I don't care too much about proportions - I would likely lengthen my arms along with legs if I do go through with surgery, though my wingspan isn't that important and wouldn't need to be a match. Torso length isn't important to me at all, in any case, I'll look like an enderman which is cool, lol.
I suppose it's clear that my goal is reachable, but what would be the best path? Feel free to account for cost if you think you have a method that is both cost-effective and efficient, don't dismiss any ideas because they are too expensive though.
Feel free to ask further questions, if any.