Your floating floor installer will have a better idea on how to prevent noise transference through the walls so it would be best to ask them. I would have thought that an adequate gap between the flooring and the wall should be enough to prevent sound from the floor being transferred through the wall.
Whether a floor will create a lateral noise nuisance can only be properly assessed after the flooring has been laid.
Your SM is being unreasonably overly prescriptive in my opinion. It is not the responsibility of the SM to set the rules in your building. If the floating floor is laid by a competent trades person then lateral noise transference should not be a problem.
In your application you could add this statement: that should it become apparent that the floating flooring unreasonably interferes with the ‘peaceful enjoyment of any other lot’, that you will pay for the complete removal of the hard floor and the installation of carpet or a satisfactorily insulated hard floor.
The onus would then be upon the person who is affected by the issue to prove that the interference from your floating floor is ‘unreasonable’, but only after the flooring has been laid.