If you want Ceramics, just get the Diff OutDrive bearings, but don't waste your money on a full set of ceramic bearings.
Basically, only use ceramics in locations that do not suffer any impact damage. Diffs, Spur Gear, Belt Tensioner, Ceramic Balls, etc... I sometimes would use them on the inside of the C-Hubs and Rear Hubs, but not the outside.