Plan in milestones rather than around a single date. Set targets for the evidence, the enterprise readiness, and the application package, and treat passport issuance as an input with an unknown date. Remember that a visa's validity period and the authorized stay recorded on an I-94 are separate, which matters for later planning.
Build the plan so one delay does not reset it
Identify which steps actually depend on the new passport, including form details, scheduling and travel; a delay may affect more than the final step. Continue evidence work that does not depend on it and review the consequences for binding business commitments. E-2 permits temporary nonimmigrant activity, not permanent residence, so the intention to depart when status ends remains part of the case.
The investor's visa validity, the admission period recorded on the I-94, and any later dependent applications run on different clocks. Landlord response times are outside your control and vary with the property, so send the consent request early and keep the correspondence. For a consular E-2 application the applicant pays the machine-readable visa fee and, depending on nationality, a reciprocity fee at issuance; Canadians should check the current State Department schedule.