I think with that range you could ask for 65 (just over the midpoint) and then they’ll offer you something in mid-high 50s and then you ask if they can go up at all and they might go up a little or say no but then in either situation I would also suggest asking if they would be willing to provide a sign-on bonus to help get you where you need to be. Almost everyone I know in a staff position at Harvard was able to negotiate a $1,000-2,000 sign on bonus (paid out after your first 90 days). This might depend on which school at Harvard your applying to so ymmv. Good luck!