Conditional permanent residence runs for two years, and the petition to remove conditions is generally filed during the ninety days before its second anniversary. The evidence at that point has to show capital sustained at risk and the required job creation, which is why a project timetable running past that window is a serious problem rather than a delay.
Work backwards from the removal of conditions
The date that governs the investment decision is not the approval of the first petition but the filing window two years after conditional residence begins. Everything the project promises has to be demonstrable by then, or capable of being shown as reasonably imminent, and construction schedules slip more often than they hold. An investor should therefore ask the sponsor for the expected job-creation timeline stated against that window, in writing, before committing, and should treat vague answers as information in themselves.
Hypothetical example: a processing project's own schedule shows hiring beginning in its third year of operation, comfortably after the point at which an investor who funded it at the outset would need to file; the mismatch is visible in the sponsor's own documents and is the sort of thing an independent review is for. Ask for that timetable in writing, and treat reluctance to put it in writing as an answer in itself.