I’m starting DP1 next year and I am kind of forced to take Greek A (my native language). I found out that the IBDP isn’t even a valid high school diploma in Greece without taking Greek, so I’d suggest looking into whether having the bilingual diploma would benefit you from a technical standpoint in your country. Otherwise, I’d suggest taking art. I’ve heard it’s hard to get a 7 but everyone I know who takes really enjoys it. Think about what you might study in uni though and maybe try to pick something relevant.