Along with get a lawyer's opinion before doing anything i would stress that you can talk to multiple lawyers or firms to get different prices and opinions. Also I have found that people are usually happier if they find their lawyers through a connection rather than just searching Google or the yellow pages.

Yes; one of the things I noted in the worst company investment situation I was ever a witness to (angel investors who turned out to be devils who wanted 100% of nothing...) was that lawyers keep things below the level at which people pull out knives and have at each other.

A rather useful institution for a society.