Profiles from your GEDCOM will not be imported automatically or en masse into WikiTree. You must process the profiles through the GEDCOMpare app first.
You should review other G2G posts, as well as the Help pages, to learn some of the pros and cons of the GEDCOMpare process. Check the tags gedcom and gedcompare for relevant posts.
You could.... however, those of us trying to clean up old GEDCOM imports find it very time consuming and frustrating to edit sources that often are inaccessible. If you upload your direct line only, that may work. Personally, I have found it very helpful to enter all my familly manually...and I still make mistakes!