It is easy to forget things, especially if you are excited about the site. Also let each member have their own check list. You will find that members may disagree about whether a site has a particular aspect or not. You may discover at this point that your group has a wide disparity in what they want in a site. Don't get discouraged by this.
People do change their minds, especially once a site is found.
Finding the right site Don't be discouraged if it takes awhile to find a site. The process of finding the right site often takes longer than any other. Some of the groups goals may need to be compromised. You will lose a few people along the way so be prepared to do yet more recruiting. A good site for some members may be unacceptable to others.