I think funeral rites would vary depending on the culture, but I think what you proposed is perfectly fine, and yes, if they were cremated on a funeral pyre, it would (I hope!) eliminate the chance that their bodies could be used for nefarious purposes.
Perhaps after a wake of 3 days *shrugs* Like I said, I think it might vary by culture on preference of how to perform the rites. Prayers and such would probably be fairly straightforward and standard throughout the Toran church, but I think you could be creative on that part when you write it. If in doubt, feel free to ask.