I waited to move the money from savings until the day we heard it passed ROFR. No reason to do it any sooner. When they send the closing paperwork out, your inclination as a buyer will be to hurry. The seller won't feel the same, and the sellers' forms have to be notarized. So you easily have a week, even after you hear that you pass, before the funds' move needs to be complete. Also, the closing agency usually wants a cashiers check- which your bank may well be able to withdraw against your savings account directly in any case.