Feasible goals? Mockups and Proportions Included

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Hi, I'm considering getting limb lengthening surgery and wanted to ask about what lengths would be good.

Here are some of my numbers:

MeasurementCentimetersInchesHeight16565" (5'5")Wingspan169.566.75" (5'6.75")Sitting Height91.536" (3'0")Arm Length*7128Tibia/Lower Leg**35.514Femur/Upper Leg**40.516
*Arm length measured from top of shoulder (the height at the top of the shoulder?) to fingertip with arms at the side.
**I'm not sure if I'm measuring these right. I'm kind of measuring from where I think is my femur ball joint and then down to my ankle, and dividing it into the two parts at the knee joint. This is probably really unreliable and an X-ray could very well show very different ratios.

A few things I've read on various posts in terms of proportions:
 - height shouldn't exceed my wingspan by more than 6cm (that would leave me at a maximum height of 175.5cm)
 - ratio of height to arm length gets noticeably bad at 2.5 (would be around 177.5cm)

Here's a markup of various options I am considering: https://i.imgur.com/BwiUUbf.png

To my eyes, 178 does not seem too bad. But perhaps this is a bad angle or mockup, or there are other things I am not considering (camera angle distorted by stretching a photo).
I also understand things wouldn't quite look the same as in the mockup, especially with loss of leg thickness from lengthening.

I am primarily considering either lengthening 5cm tibias and 5cm femurs simultaneously, or lengthening 8cm femurs and then 5cm tibias a year later.
Although lengthening 8cm femurs and 5cm tibias at the same time might be ideal, I am not sure whether that is safe or feasible. Anyone with knowledge and/or experience that could chime in would be appreciated! (I am looking to use stryde).

My main question is whether a final height of 177-178 would be proportionally reasonable or whether I would regret not having gone with 175.
If 177-178 is reasonable, then I would wonder whether it could be done with simultaneous lengthening. The difference in cost between simultaneous lengthening and two sessions a year apart is not a major concern. My main concern would be having to take time off twice rather than once vs. the greater chance of problems with simultaneous lengthening, especially if I try to push for something like 177-178 (if that is even possible).

Thank you for any help and advice relating to these concerns. General feedback on the mockups is also welcome. Thanks!

Bluewiro

edit: TL;DR: Should I try for 177-178 with these numbers? Mockup here: https://i.imgur.com/BwiUUbf.png

Edit Post

Thanks for the feedback, I really appreciate it. I think the approach I'm most seriously considering right now is to do femurs first for at least 7cm, and then to do tibias a year later, to hopefully reach around 178 total.

Also, I remeasured my wingspan and somehow it now measures at 67.5. Not sure if I was having my arms at a weird angle when I measured it before but in any case 67.5 is somewhat reassuring.