Or you could just max the IRA every year for the life of the loan ($33k is enough for ~5 years). Just stick it in t-bills for now and invest $6k of it or whatever in an IRA each year.

Cash flow is nice, but it's worse than getting a better return.

The main exception is if OP would switch to cheaper insurance without the loan, which would probably be better value than the higher returns in t-bills.