Inheritance is separate property of the inheriting spouse. So, the bankruptcy trustee couldn't reach your spouse's assets, unless she is a joint petitioner on the bankruptcy. And, you can't reach those assets, either, as along as they are maintained as your spouse's separate property. The court has no jurisdiction to award you any portion of the inheritance unless it is commingled, or, the property appreciates after it's inherited, due to your personal effort (i.e., investment acumen).
Based on your facts, then, you may be better served by sticking with the Chapter 13. But, I would encourage you to consult with a local family law attorney, though, I think you will find most have zero bankruptcy law knowledge, and similarly, most bankruptcy attorneys have zero family law knowledge.
So, seek counsel very carefully to get the whole picture.
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Hope this helps.