To directly answer your last question: YES, contact the pre-1700 people to be sure, even if you have pre-1700 certification. Prevent an error. Also, by going over this plan with a project member, you will really learn how to do it. And as several dates are Pre-1500, you absolutely must contact those project people [Bobbie (Maddison) Hall, for instance] or, without certification, your attempt to make a change will be blocked. Directly ask some one for assistance.