I would have to look at the details of the plan, but initially, this sounds like one of the dumbest things I have ever heard.
1) Credit cards won't give you a high enough limit to buy real estate.
2) Credit card interest isn't tax-deductible.
3) Credit card payments and interest rates are much higher than mortgages.
4) If you plan on borrowing from your credit card for a down payment on a mortgage, don't. Most mortgage lenders don't like that.
Basically this seems wrong at first glance. Unless the details somehow overcome all the negatives (which I doubt), don't do it.