Really recommend considering an approach to moderation that lets the members participate. Perhaps layered moderation like:
1. A paying member can flag a post as abusive.
2. If a post is flagged it becomes invisible to non-paying members.
3. If another paying member flags the same post then it gets added to an admin panel for you/staff to review and then you decide what to do with the post, the poster, or the flaggers.
Or some variation of non-paying < paying < moderators < staff < you.
I honestly don't understand not doing something like this if you need to reduce the DP workload.