Case study for Membership: Need your help

A "Manage Users" form in my web application will list following information:
    User name (from membership table) 

    Email (from membership table)

    First name (from profile)

    Last name (from profile)   

    Role type (from profile)
Now, to extract this information, I will need to use Membership data as well as Profile data of all users.
For that, I think creating a custom MembershipProvider will help me. Say, it is "myMembershipProvider" (inherited from MembershipProvider)

And also I may need to create a custom MembershipUser. Say, it is "myMembershipUser" , which will have "first name" and "last name" properties in addition. (inherited from MembershipUser)

And when I call myMembershipProvider.GetAllUsers() method it should return List<m ...