176 cm to 183 cm to 188 cm proportions

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Here is the my proportions in 3 different ways while current height is 176 cm:
1) +7 cm tibia
2) +7 cm femur
3) +7 cm tibia and +5 cm femur
 
  How does 188cm looks?

Mockup photo is here ------------------> https://drive.google.com/file/d/1KdJ_NEpoQ9BtmzqsZ0S2SfjUG4JsFkHp/view     

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Based on this, for proportions I prefer femur pic, then both, then tibia. Which is unusual, so could be photoshop quality issue too :p

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Up until about 4 cm only femurs is okay, anything above that will look weird nked unless very high starting tibia:femur ratio.

IMO it's always better to lengthen tibia for 2 inches if one is never going to lengthen the femurs later as it will look much acceptable rather than doing 3 inches in femurs. The latter option will always require tibia lengthening later to balance the biomechanics and proportions.