[Lynn Eades]

The bush in your "egg cup" is only there for the other types of axle joints. Your axle is self supporting.
On brake linings, there will be different types available.
Some will work well wet or dry.some won't etc talk to the brake people about what is suitable for your application. You can also have your linings radius ground, to suit your drums. ( it makes fo good brakes straight away.
With the axle lube, talk to a lube specialist at one of the oil companies.
Pivot bearing. Get another, so you only have to do it once.