When you form an LLC, you need to draft articles of organization that comply with the state’s LLC act and then file the articles with the appropriate state office.
Typically, the required articles are broadly worded and likely don’t address members’ rights and responsibilities as you would like them addressed.
I suggest that you consider the extra step of having your lawyers create a written operating agreement. This agreement provides operational rules for running the business and can override or alter the default rules in your state’s LLC act to better meet your needs.
With the operating agreement, you
increase the LLC’s limited liability protection by making it more difficult to “pierce the veil,” because the operating agreement makes your LLC appear more business-like;
can prevent the unwanted dissolution of the LLC, which distributes the assets to the members with no LLC shield from creditors’ claims; and
can create the plans you need in case of death, divorce, or withdrawal.
As to deducting your legal fees, the rules allow you to deduct up to $5,000 in organization costs immediately and then amortize the balance over 180 months.