Yes, you can redirect directly to their edit profile page. You'd need to have a menu item setup for this, but that's pretty simple (and we can help). Once redirected there, their Joomla user account will have already been imported and all of their profile information and avatar sucked in from Facebook. Therefore, the information that's pulled from Facebook would be pre-filled in, and they can simply update/add/approve what's there.
We also have 2 different redirects, one for initial registration (where you could send them to their profile) and another for a returning user, so you can send them to a more appropriate page other than always showing them their profile.
Hope this helps, and we're very serious about our 30-day guarantee. If you aren't satisfied, just let us know, and usually, refunds are processed within 24 hours.
Thanks, and good luck!