How much can I lengthen from LL?(Pics included NSFW)

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I am around 5'4.5(163 cm) and I want to lengthen to around 5'8.5- 5'9. Should I lengthen tibias or femur?(P.S my tibias are really short, my foot doesn't touch the ground sometimes when I'm sitting in certain chairs)

My inseam is around 27 inches
My wingspan is around 5'7-5'7.5(170 cm)
I'm not to worried my wingspan not matching with my height
I am looking to aim for an aesthetic lanky leg type of look or something close to it

https://imgur.com/a/LPcA7We

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How much would double LL cost? And can you do double at the same time opposed to doing it a year later?

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@Medium Drink Of Water

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How much is a safe amount for the tibia? I heard around 5 cm but I heard it isn’t very optimal for mobility function.

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I’m guess I can say I’m pretty flexible and healthy, is 4 inches for femur safe?

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5’7 is still considered short, I’m trying to get to atleast 5’8