If the bearing were 'dry' when you took them off, then you should replace the whole works. Bearings and seals should run you LESS then 20 bucks. I don't know about how much the hubs cost. For that all to be stuck on there that bad, something got REALLY hot.
I have done virginal brake jobs on cars with 75k, 100k, and 125(!!!!)k. Sometimes they are a little bit rough, but NEVER that bad. Replace the works, if for nothing else but safety.
BTW, you SHOULD do both sides.
