hanging a curtain rod
So after scraping popcorn off the ceiling and tearing up the wall board removing wall paper, and finally getting everything mudded and painted, I got stumped with a silly curtain rod. This extra long rod came with plastic wall anchors (that look like they will wing out behind the wall) and some very fine threaded screws that have no threads at all on the last 1/2 inch near the head. The anchors have a blunt end meaning I need to drill a pretty substantial hole for them to go in. Is this the best way to go or should I buy a different kind of anchor?
Now the top screws in each bracket will go into studs so I won't use the anchors, but are these screws going to work or do I need to find some more substantial screws with threads all the way up? The curtain rod is over 100 inches so I need it to be sturdy.
Thank you for your help.