Processing times vary by category and are published by USCIS, with rural set-aside cases receiving statutory priority. After approval and admission, conditional residence runs for two years, and Form I-829 must be filed in the ninety days before the second anniversary to remove the conditions.
Three clocks, and only one of them is under your control
The first clock is adjudication of the investor petition, which depends on caseload and on whether the project falls within a reserved category. The second is visa availability, since demand from some countries of birth can exceed the annual supply and the Department of State visa bulletin is where that is tracked; a rural or high-unemployment set-aside can change the picture materially. The third clock starts on admission and runs for two years of conditional residence, during which the capital must remain invested for the required sustainment period and the jobs must come into existence.
Gurpreet controls only the third, and only partly. The vendor take-back note is his immediate problem, because the full qualifying amount has to be invested rather than promised, and instalments arriving over four years do not meet that. Bridge financing or a later filing date are the usual answers, and both need advice before the sale closes.