Tropic Air flies Cessana Caravans, which are widely known in the aviation industry to be one of the most respected workhorsees in the air. That airplane can be packed with twice as many passengers and twice as much luggage as you'd think is possible, and still fly like a charm. They have an incredible safety record. I cant speak for the airline's baggage policies or the individual pilot's tolerance, but if they let you pack it heavy, dont be worried about the plane handling it. It can!