No, that’s the long way around to get to CBR. You should plan to exit 417 at exit 6, International Drive/World Center Drive. Follow World Center Drive straight ahead under the Welcome to WDW sign, exiting to Buena Vista Drive. Go left on BVD, and take it west to CBR. The resort will be on the left side of BVD. If you get to Epcot Resorts Blvd by the Boardwalk, you’ve gone too far.
Two tolls, total of $3.50 cash when you exit 417 at the International Drive/World Center Drive exit, and you will be taking a more direct route to CBR. This is the typical route followed by the Magical Express buses when they stop at CBR enroute to dropping off at the Boardwalk. Only once (in more than 20 trips) has the bus continued on 417 to the Osceola Parkway exit, and that was due to the driver avoiding the construction around the intersection of World Center Drive (known as Epcot Center Drive by that point) and Buena Vista Drive.