Custom user Login in ASP.NET MVC 4

I'm guessing you're talking about this piece of code in the MVC4 template? I'm doing something very similar - upon login, I redirect the user to a page called Index.cshtml listed under the Account controller :

[HttpPost, AllowAnonymous, ValidateAntiForgeryToken]
public ActionResult Login(LoginModel model, string returnUrl)
{
     if (ModelState.IsValid && WebSecurity.Login(model.UserName, model.Password, model.RememberMe))
     { 
         return RedirectToAction("Index", "Account");
     }

      // If we got this far, something failed, redisplay form
      ModelState.AddModelError(string.Empty, LocalizedText.Account_Invalid_User_Or_Password);

      return View(model);
}

For user specific data, why not just extend the UsersContext.cs class in the Classes folder, then use WebSecurity.CurrentUserId to retrieve the information that pertains to that user?

Extended UsersContext class :

[Table("UserProfile")]
public class UserProfile
{
    [Key]
    [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
    public int UserId { get; set; }

    public string UserName { get; set; }

    public string Name { get; set; }

    public bool IsPromotional { get; set; }

    public bool IsAllowShare { get; set; }
}

This is the Index() action on the Account controller that they get redirected to upon login. Here I just call the users context, new up an AccountModel that's bound to the Index.cshtml page, set those attributes in the model, then return the View with the model we've built :

public ActionResult Index()
{
   //New up the account model
   var account = new AccountModel();

   try
   {
      //Get the users context
      var CurrentUserId = WebSecurity.CurrentUserId;
      var context = new UsersContext();
      var thisUser = context.UserProfiles.First(p => p.UserId == CurrentUserId);

      //Set the name
      account.Name = thisUser.Name;

      //Set the user specific settings
      account.IsAllowShare = thisUser.IsAllowShare;
      account.IsPromotional = thisUser.IsPromotional;
   }
   catch (Exception exception)
   {
      _logger.Error(exception, "Error building Account Model");
   }
   return View(account);
}

It may not be exactly what you're looking for, but that should get you moving in the right direction.