It sets the earliest realistic filing date. The petition should follow the point at which sufficient qualifying capital has actually been received and committed to the enterprise.
Let the money arrive, then file
Hypothetical example: Filing before the capital exists creates a petition that cannot be supported, and a request for further evidence will simply expose the gap. The sequence that works is to map the take-back payment schedule against the threshold, identify the month in which received funds plus existing liquid assets reach the required amount with a margin, and plan the source-of-funds documentation for those specific dollars in the meantime. That preparation time is not wasted: assembling decades of farm records, obtaining certified copies of quota and land transactions and having an accountant reconcile them is months of work in itself.
Layered on top are USCIS processing for the investor petition, visa availability considerations shown in the Visa Bulletin, the consular or adjustment stage, and then two years of conditional residence, with Form I-829 filed in the 90 days before the second anniversary. A couple planning around a retirement date should read that whole chain end to end before setting one.