You should add a link to the page where these are posted in DA and give credit to the original artist in your description.

As a rule it is best not to post other people's work.
If you feel that you must then I believe the license should be either Custom or Attribution+NonCommercial. The latter implies that it may be alright to re-post the work as free for personal use. Be careful.

Be sure the license you post does not conflict with the author's and ensure that you have permission to post the work in RW before you do so.

Oh, there it is again.
That same old lame excuse that you cannot access DA on your school's pc.
How is it that you claim to be online until midnight everyday?

Oh, what a tangled web we weave when first we practice to deceive!

No one wants to hear this excuse again.
This is no reason for you to be unable to do what you should.

Just delete all the icon and cursor sets that are not your own creations from scratch and be done with it.

Everyone knows you plagiarize other people's work and no one wants to hear your excuses.

. . .