Every professional has their own preferred system or method of doing something. A high quality outcome is of importance rather than the various methods that can be used. Not sure why the walls would buckle when emptied? Maybe the professional who mentioned this has had them move before and crack the shell. Have a chat to a few companies and ask them why their process is better than the others.

There are two types of glass pool fence. Frameless and semi-frameless. Frameless fence sits in two spigots which are fixed to the ground. There are no supporting vertical poles between the glass pieces. The semi-frameless fence is attached to vertical supporting poles between each glass fence. Numerous helpful sites are available online, from where one can install glass pool fences to add style and luxury to your swimming pool.

Many houses in Cairns have pools out the front. It will depend on your local Council. Give them a call they'll put you on the right track regarding pools and set backs. You can get an idea of what is allowed from your neighbours.

I think more info is helpful. For example I'd be happy with that size but questions that occur to me include does the climate allow for using the pool for a good part of the year or would it be sacrificing garden for something only used for a small part of the year, and how would that size pool sit in the space by which I mean does that leave room around the edge for paving and planting giving it aesthetic appeal even when not in use or would it look shoehorned in against a boundary fence with the visual appeal of an institutional exercise facility? Does the pool company not have any pics of other installations they've done?