The good news, I suppose, is that there is almost no chance your non-profit organization will ever face an IRS audit. This is not my opinion. The numbers don't lie.
In 2009 the IRS audited approximately 1,723 of the existing 800,000 tax-exempt organizations. The arithmetic is pretty straightforward: The chances of any single organization facing an audit during any year are about two in a thousand. When you consider that lately the IRS has tended to focus its audits on specific categories of non-profits (e.g. universities, credit counseling groups, etc.), your risk of an audit diminishes to infinitesimal if you aren't in one of the categories.