I don't think the combined time plus cost of two surgeries would be worth it just for proportions. We're talking around 2 years and $150k+ (for a good, stateside doctor) of your life and money gone here.
If you want my advice, do what I'm doing and call it a day. You could even do less than I'm doing if you want. I'm a little shorter than you, but when I'm done I'll finally be the glorious 6 ft. I'm currently going through LL in my femurs, I plan to get at least 7.5cm out of it and be done with it forever. According to what the surgeon has said, I'll be able to walk sometime in late August/early September and be back to my athletic abilities by November. After that, I'm calling the journey complete and you should look into doing the same.
My diary can be found in Patients Experience section if you have any questions, good luck making your decision.