Kortney and Dave Wilson of HGTV’s “Masters of Flip” joined staff writer Jura Koncius on The Washington Post’s Home Front online chat. Here is an edited excerpt. Q: How much money do you need to flip a home? Also, is it better to get a mortgage on such a property or, if you have the cash, purchase the house outright? A: (Kortney Wilson) That is a loaded question because not only is every house different, but every market is different.