Comprehensive Amazon FBA Setup Audit

I already have a live Seller Central account with a handful of active listings, but I’m not convinced everything is configured for long-term FBA success. I need an experienced Amazon specialist to walk through the entire account, spot gaps, and map out the exact steps I should take next... (Budget: $250 - $750 AUD, Jobs: Amazon FBA, Amazon Web Services, Conversion Rate Optimization, eBay, Keyword Research, Magento, PHP, Tax Compliance)