Yes, Commerce and Management are definitely good choices as optional subjects as they have a good success rate among candidates. Even though they’re not as popular as the other optional subjects like Geography or Public Administration, there have been several IAS toppers who have chosen Commerce or Management as their optional subjects and made it big.
Now to state, some advantages of choosing Commerce or Management as the subjects of your optional papers are that they’re generally scoring subjects as they’re logic and rationality-based by nature.