Usually the U.S. company exists, is capitalized and holds the assets or firm commitments before an application is presented, because the file must describe a real enterprise. Exact sequencing depends on lender consents, tax advice and lease conditions. No processing time is guaranteed, so treat closing dates and start dates as provisional.
Sequence the corporate steps around the evidence
Order the milestones: incorporation and share issuance, funding of the U.S. account, signing and closing of the asset purchase, delivery or transfer of the assets, and completion of the valuation file. A Canadian citizen generally needs an E visa, so allow for the consular step after the corporate work.
Remember that a visa's validity and the period of authorized stay recorded at entry are separate. Hypothetical example: a living-wall and interior plantscaping business signs a lease conditional on the landlord completing base-building work, then plans every corporate step around the promised handover date. Two of those steps depend on the landlord and the rest do not.
Separate them on the schedule, since incorporation, share issuance, funding and the valuation file can all proceed while the premises question stays open, and pushing everything behind one contested date wastes months. Identify what each remaining milestone actually depends on and name the person who can confirm it. Then leave the consular step where the evidence puts it rather than where the commercial calendar would prefer, and treat any start date given to staff or clients as provisional until the file is complete.