Just find a good attorney. You'll probably spend about $500 to get it drafted but it will be iron clad. If you draw one up yourself and find yourself in a dispute in a few years be prepared for litigation. And thats going to cost you more than $500 and that is for sure. I'd stay away from the online documents especially as they relate to operations, handling disputes, and dissolution. I've seen people get burnt by those inferior products. #1 rule of paperwork is to Cover your a55.