Just for clarification for I believe you likely omitted from point 2, ROTH IRA, not a traditional IRA.Steps we try to follow:
1. Contribute enough to your 401(k) to get the full company match.
2. Contribute to and max out an IRA.
3. Max out your 401(k).
4. After that, I'm not as knowledgeable, but I put extra money into a brokerage account. Others may choose to invest in individual stocks, buy CDs, or pursue other options.