1) This makes me want to reread Sandman again even more than I already did.
2) I find that writing an abbreviated version of an idea running around through my head tends to quiet it down. Granted with so many ideas you may be stuck writing fragments for a while, but maybe eventually? (Do you do 750 words or Morning Pages or anything like that?)
3) I'm really impressed and inspired by your recent activities--all the submitting and writing and getting published.