Wouldn't bother, save the fuel and stick closer to the mainland. Adele doesn't have any of the scenery the kimberley is known for, just a low scrub island and fishing is no better than inside the archipeligo. that awesome deep channel between Churchill might troll up the occasional mackie, if your thinking bottom bashing the ground looks awesome on the charts but it'd be impossible to hold bottom that deep with the tide. 

Stay closer to the mainland and you'll have a much better Kimberley experience.