Before tax, you earn $140K. After tax, maybe $100K. 5 years of that is $500K. Buy a term policy for at least $500K. Then your wife won’t have to work for those 5 years. Consider 10 or 20 year level premium term. Shop around at the online quote systems. I’d look at amounts up to $1 mill, if the premiums are good.
If you are an employee, you may have group life benefits from work. Check that first.