First, the reasonable and necessary aspects are in the chapeau of the proposed subsection 501(3). Those requirements apply to each of the paragraphs (a) through (k).
In terms of proportionality, that is already required and it is something that police consider. That is part of the reasonableness. It says in the chapeau, “reasonable in the circumstances of the offence”, so that would bring in a proportionality requirement.
The other thing to recall is that the principle of restraint in proposed sections 493.1 and 493.2 applies as well, so those safeguards would be there.