I'm fixing up my old Viscount 10-speed, which has a Shimano freewheel. Since the chain was stretched, I'm assuming that the gears on the original cluster are worn as well. I've got another freewheel and chain from another much-less-used Viscount that I want to replace the originals with. I also need to replace the sealed bearing assemblies on the rear hub. I have a new pair of those as well.
So, I have to get the freewheel off the hub to do this work. Is the extractor something I can pick up at my LBS? Do I need a chain whip, too? Should I plan to replace the ball bearings while I'm in there?