Once most of the defenses have been taken down, place your remaining Wall Breakers and make space for Wizards; the Wizards should take out mostly everything except for the Town Hall and Clan Castle in a few shots. With hopefully some of the Balloons to help, it should be really straightforward and be a definite win.
Dragon strategy: First of all, like the first strategy start, destroy the Air Defense with Giants and some Wall Breakers to make space. Deploy a Dragon and wait till it takes out all defenses; this may take time because it doesn't go for defenses first. Archer Towers shouldn't be too much of a problem due to their high hitpoints and the low damage the Archer Tower does to their health. You could either just wait and destroy everything, or place Archers or any other troops.