I think having a flattened out feather pillow is a good thing. I've never understood how folk can sleep with two pillows, even before my accident I had to have a single pillow or sometimes none. Computers don't do much for necks either!

Edit: I would also recommend ditching a bed with springs and get a proper futon (i.e. not sofa bed) or memory foam bed. That way your whole body is supported and the springs aren't trying to resist your weight. Certainly helped my sleep in the past.