You want to do everything you can to make sure their content is indexed first. Try submitting it to social bookmarking sites. I know that most social bookmarking sites won't drive a lot of traffic but at least it will stimulate some activity around the original post and hopefully get the crawlers first. Also make sure you're promoting it via social media site like Facebook, Twitter and LinkedIn if applicable. Have your client's share it on Google+ and +1 it as well. The more activity you can get around their content as soon as it goes live the better.