On the one hand, I like to think that adcoms understand that us non-trads are busy with our full-time jobs, families, etc. but on the other hand, I think we need to check all the same boxes as the trads and then some.
As far as clinical exposure, you're definitely good. The volunteer bit is meant to show that you're interested in serving your community. Will you have non-clinical volunteering? I think it would be a mistake to apply with no/minimal recent volunteering. Could you get 50-100 hours of either clinical or non-clinical before you apply?