I believe Tower Hobbies has a complete list of all the bearings listed under the technical details of the Kraton. With that info you could just source the bearings from just about anyone who sells them. Fast Eddy's has kits so it makes it easier, but you have other options.Thank you .
I would only put ceramics in the motor or in internal trans, everywhere else it is kind of a waste. For the motor I would highly recommend Hybrid stainless ceramic motor bearings. Everything else on these I would go standard rubber sealed.