Evaluating Sending.ac for Outreach: Managing 600 Inboxes?

Hey Everyone, Quick question as we evaluate Sending.ac for outreach. Moving from Google inboxes to improve deliverability. Considering their $199/month plan with 600 Outlook inboxes (their recommendation: only 2 emails per inbox/day = 1,200 total emails/day capacity). Is it practical to create and manage 600 inboxes when our internal team is much smaller? What approach would you take for the inbox identities/names? Would really appreciate your take on this.