It is good advice to get some legal help doing this. That being said, generally those amounts are "per debtor" so you should be able to stack them (one for you, one for him) unless the exemption is specific to the contrary. A good resource you might want to review is www. exemptionexpress.com. If you need to research and have a better chance at finding a dedicated bankruptcy attorney in your area, check out NACBA's website and use their lawyer locator option there.
I personally handled a case involving MO exemptions. It was for an individual who had moved to Maryland from Missouri. The exemption scheme is a bit complicated if you're not familiar with it. I actually hired an attorney in MO to go over it with me because the case involved a substantial amount of assets. I would strongly suggest that you get an attorney. If you can't afford one then by all means contact the local bar association to see if you qualify for a pro bono program. Good luck.
Russack Associates, LLC
Disclaimer: Please note that this answer does not constitute legal advice, and should not be relied on, since each state has different laws, each situation is fact specific, and it is impossible to evaluate a legal problem without a comprehensive consultation and review of all the facts and documents at issue. This answer does not create an attorney-client relationship.