Hi Mosca,
You might find these threads helpful:
http://www.pprune.org/medical-health...too-short.html
http://www.pprune.org/south-asia-far...re-you-21.html
I've researched the "height" topic because I am "not tall" too! Just about 165cm. Believe me I've seen captains from an asian airline shorter than I am. Boeing's lower limits for flying it's airplanes is 158cm. The 165cm requirement is for SIA (or any airlines that has any stipulated height minimums) only.
Happy reading!