Start the source-of-funds work before the sale closes, because the hotel's ownership history takes time to document; select a project and fund escrow once the proceeds are in hand; then file Form I-526E. Overall processing runs years rather than months, and a child's age can make earlier filing important.
Prepare the trail during the sale, invest after closing, file promptly
The sale and the EB-5 case run on different clocks. While the hotel is listed and under contract, the Okonjos can gather its acquisition and financing history and their tax records, so that the day the proceeds arrive the source side is already documented. Choosing a project and reviewing its offering, economic report and regional-center standing can also happen during the sale period.
Once funds are in the enterprise's escrow and the subscription is signed, the petition can be filed; filing before the money is committed is not possible. After filing, adjudication of Form I-526E is lengthy, and visa availability depends on the annual limits and any set-aside category the project falls in. A child in their late teens shortens the acceptable preparation window, since the age freeze starts only when the petition is filed.
Conditional residence is followed by the I-829 filing window two years later, so the family should keep every enterprise report from day one.