1) As titled, would you to travel to Kowloon (potentially Lai Chi Kok or Kwun Tong) from HK Island just for a proper WL gym?
Nope. My gym choice is dictated first by proximity.
2) How much would you pay for the this approx. 1600 sq. ft. gym monthly? (Price range would be sufficient)
If it was a properly outfitted gym with good equipment, space and not stupidly crowded, probably just under Pure prices.
3) Does a shower room really matter to you (when you go to this type of gym, not your local fancy PF)?
If it was air conditioned and was geared purely towards powerlifting/weightlifting vs cardiobunny stuff, a shower would be completely unimportant to me.
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Much as I like the idea, I don't think that gym preferences here favour a black iron gym. The percentage of gym goers who do this kind of lifting seems to be minuscule.