[Eldorado]

dont worry about the film on the brakes. it prevents rust (ever see a set of rotors that have been in the rain after a couple weeks? they rust easily), as well as minor scratches or abrasions before selling. just put them on and the pads will do the work.

dont forget to brake easy for the first hundred or so miles until your rotors and pads have had a chance to adjust.

as for the seals, inspect them. if they're not hard, still flexible, and dont seem to be worn, then you're good to use them over again.