www.rockauto.com
thats where i get most of my reman stuff, like calipers/rotors there prices are superb in that category.
the wheel bearings u will want www.hondaautomotiveparts.com, they will be listed under (rear brake?)

if i were you i would try to determine which side is making the noise...also dont forget that caliper failure/sluggishness is very common if the car has been sitting for several months, along with the rotors getting rotted or warped.

~kris