I've raised an orphan twice before and the TV set is a savior. I would get it a couple of buddies though.
The other thing you could do is someday buy an incubator and then find someone local that raises silkies to buy hatching eggs from. I used up the only breeder within an hour of me so I...
First off, week old chicks can't get coccidiosis as it takes a couple of weeks to build up to the point of even showing a symptom. The Corid won't hurt it though. Be sure to follow up with vitamin water like Poultry Cell and probiotics after you run the course of it.
Shipped chicks sometimes...