Hey! 3 things that already stand out are your experience working in HR, the crisis responder role (schools LOVE this since it's direct support to people in crisis), and the senior calls. To help strengthen your application, I'd strongly suggest partaking in online social work/mental health/addictions professional development courses. These are things that will sometimes provide you with a certificate upon completion free of charge, and show the application committee that you have knowledge and skills beyond your volunteering/professional roles.
I'd suggest looking at the specific application process for each of those schools and weed out the ones that might highlight your "weaknesses" versus strengths. For example, Western makes you break down -- to the hour -- how much direct and indirect experience you have, and they appreciate both. This would give you the chance to highlight some of your less direct work that you've obtained over the years that is relevant but might not shine on other apps.
Social work applications are incredibly comprehensive and your odds differ completely depending on the year. I think you have a good plan of action in applying to many schools for that reason. I might also suggest applying to a couple of college programs (social service worker, addictions and mental health, etc) to have a good, relevant backup.
All of this being said by a gal who isn't even in an MSW program (yet, hopefully!!), so take it with a grain of salt lol.
Best of luck!