You don't have to fill iin profiles for your mother, father, etc. In fact, you probably shouldn't if you have included them in your GEDCOM because then there will end up being duplicate profiles. Once your GEDCOM is imported, you'll have your mother, father, etc there. Be sure to complete step #2 of the GEDCOM process. You can go to the Changes tab of your profile and find your GEDmatches report there. Check out step #2, follow all the directions and then submit it for review. If you have any questions, let me know know.
We have some great help pages for GEDCOMS: http://www.wikitree.com/wiki/Category:GEDCOMs