It depends on your financial situation now.
If you have dependents (wife, children, parents) and/or debts (student loans, housing loans), then you need sufficient coverage to pay off the loans or provide for your dependents should you pass away.
If you're a student, or just started working, I'd say $100k coverage is sufficient. It can sufficiently cover your student loans, and provide for your parents should you pass on.
Can I ask if I ROD (completely completed my NS including reservist), can I still now then sign up for SAF term ? Want to add to my existing insurance coverage at a low price