Indonesia will rely on badminton, weightlifting, and speed climbing to win gold medals in both the Asian Games and Olympics.
For Asian Games, with the absence of pencak silat and no “host powers” to limit other countries from participating in some events, surely the medal prospects for Indonesia will be reduced. I predict 4-5 gold medals for Indonesia in Hangzhou.
Other sports with medal chances include wushu, archery, cycling (MTB and probably track), sepak takraw, karate, dragon boat, and artistic gymnastics (relying on Rifda Irfanaluthfi)