After taking a closer look on various quadrilateral patients on LLT videos, I came to a conclusion that most of them look really bad, especially with massive lengthenings of over 10 cm in total. The short arms are more obvious with overlengthened femurs (after 6 cm) but when both segments are lengthened for a total of 4+ inches, the disproportion between arms and body is much more apparent.
IMO Apo did the right choice lengthening his humerus. I've seen his past photos without humerus lengthening and he looks much better post AL. I think that 5 cm in humerus is the upper limit for non-dwarf individuals and makes the proportions post quadrilateral LL much better, especially on guys who lengthened more than 4 inches in total.
Since I can get away with external tibia and humerus with pretty affordable prices and I'm going to lengthen my femurs in the end for 8 cm, I think that after 6 cm tibia lengthening it would be wise to lengthen my humerus for 5 cm and become ready for femur lengthening in the future in advance. My armspan is the same as my current height and I'm sure I won't look good after femur lengthening and more than 4 inches of LL in total without AL.
There's no point in gaining massive height with double LL and not looking masculine enough due to short arms. Long humerus is awesome for building huge arms and look brutal, especially with added height with LL.
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