Brake job - lubricant suggestions

I've about got my front brake lined out. 1982 Maxim 650 - single rotor.
Looking for suggestions on lubes.
What do you guys put, if anything:
behind the dust seals of mc and caliper?
on the slide pin?
on the sheet metal plate the pads slide on?
where the piston contacts the pads?
at the contact point onto the master?

I have all sorts of grease, anti-seize, silicone, teflon, etc, etc.

Behind both dust seals I found a white crusted buildup, I'm not sure if it's dried up lithium grease or just aluminum corrosion buildup.

Also, unrelated, I'm inclined to want to open up the return hole, but figure there must be a reason it's so small. Would it be a good idea or bad idea to enlarge it a little? (Not like I plan to neglect it for another 30 years so that it clogs up, but still.)

 

Rubber parts: red rubber grease or just brake fluid (although brake fluid is not a great lubricant, it will work just fine).

Metal parts: hi-heat ceramic grease

Return hole enlargement: Just Say No.

 

The brake pad shims are meant to be run dry.
No grease anywhere near the pads. None. Not ever.

 

Thank you, I've assembled the rubber with brake fluid already. With all the lubes I have, and always trying to use the right ones, I have to say I've never heard of ceramic grease. Is it available at auto parts stores?
Also, last but not least, what is best for the pivot?

 

ceramic grease, something like this?
https://www.oreillyauto.com/detail/...ubricant/24125/4610158?q=ceramic+grease&pos=1

 

That'll work, but it's a lifetime (or longer) supply...…………!

 

That's ok. I have other 4 wheel vehicles of around the same age. It will be good to start using the right stuff from now on.