US LLC Dropshipping Launch

I’m ready to roll out a fully-compliant dropshipping business registered as a US-based LLC (with a corresponding Ltd where needed) and I want to sell through Walmart, eBay, Amazon, and TikTok rather than a traditional Shopify storefront.

Here’s what I’m looking for:
• Clear, step-by-step assistance setting up or finalising the LLC/Ltd, obtaining EIN, reseller certificates, and any marketplace-specific documentation so every account is approved on the first pass.
• Store creation and optimisation on each marketplace—product research, competitive listing copy, high-quality images, and correct category mapping—so the catalog is ready to publish.
• Workflow for true dropshipping: vetted suppliers, automated order routing, inventory syncing, and tracking uploads that keep the big four platforms happy.
• Practical guidance on sales tax, marketplace fees, and day-to-day compliance so the business scales smoothly.

If you have proven experience launching and managing multi-channel dropshipping operations in the US market, let’s talk about timelines and deliverables so I can begin trading quickly and legally.