Rippling across the equator for nearly 5000km, Indonesia encompasses more than 17,000 islands.
Not much, we recommend bringing something to swim in, to go under your wetsuit. We would also suggest you bring a big beach towel, and sun screen. Everything else is included.
Great, don't forget to pack it well in the surfboard bag, maybe use your beach towel and wetsuit to pad out the surfboard. You might not need them, but it is always good to travel with some roof rack straps as you never know when you put need them. You may also want to pack a small ding repair kit, should you ding your surf board.