We've glad you have an accountant -- you probably wouldn't have gotten this far without them. But there are several very important differences between legal and accounting professionals.
1.) Most importantly, the attorney-client relationship is governed by privilege. In contrast, your communications with your accountant can be easily discovered.
2.) Accountants aren't trained in the law. Unless they've been to law school, they're simply not in a position to analyze written documents such as cases and IRS communications as a lawyer would.
3.) Because most aren't lawyers, accountants can't draft and review important documents like partnership agreements, contracts and the like. This is where a key difference between accountants and lawyers come into play: accountants look at numbers; lawyers look at words. Both provide value, but each sees and analyzes things from an entirely difference perspective.