Cost to repair may not be worth it. You could consider repairing and using it for kiting, but may not last long. Or take on next trip to Bali, get it repaired cheap, then give it to a kid.
I remember my first repair of a creased board. When Col Ladhams was shaping for Clearwater. Took me ages to repair and I had experience working in a shop doing repairs at the time. Then first surf I completely snapped it in a different spot.
I'm 95% sure that the stringer has also been "broken". It just needs 1 more wave (with some power), to give you the two halves (separately!).
Repair - probably at least $250... You're better off putting it towards the next board...
If you like surfboard art, one use could be: stand it in the corner of a room, with a lamp behind it... Gives a pretty cool illumination... Just give it a good clean first, wax off, etc... Then when you get sick of that look, you're probably ready to let it go to 'heaven', and you'll be in love with your newer one! (surfboard)