<prompt> Human: My wife and I are in the process of looking for a home and have already been preapproved, both credit scores 800. Just found out our dog needs surgery with an estimate of 1,000-3,000. We have the money to pay, it would just be a small setback to downpaymentclosing costs. My question goes to credit card points, actually. With such a large purchase guaranteed in my immediate purchase, would it be foolish to open a new card to take advantage of a generous cash back offer at this time? Thanks!  <response>: When buying a house, try keeping everything the same until you get the keys. 