Don't use either of those greases! The ceramic grease is meant for gears I think, and the slime is for shocks - not sure if it will work but I wouldn't use it. I wouldn't put either of those anywhere near the diffs.
I use Tamiya silicone grease, the clear stuff - it's some of the best I've used. If you don't have any or can't find it (finding Tamiya stuff can be hard) then pretty much any silicone grease will be 'ok'
For the thrust bearing I use anti-wear grease (again, some came in the kit)