Your best bet is to enter your information in the Car Rack Configurator at the top of the page and that should tell you if it will work or not.

configurator doesnt have a extension question

Do you have the hitch extender only so that the bike rack will be far enough away from the spare tire? If that's the case, it should be just fine. Racks aren't 'recommended' to be used with extenders because they increase the torque placed on the hitch and because with the additional junction they aren't as stable.

My wife uses an extender on her Escape to convert her 1 1/2" receiver to a 2" for our Thule T2. It works fine, but isn't quite as stable as when the rack is directly into a 2" receiver.