Tamed about 7 today and so far haven't seen a need to take a higher level. The CP output seems to be the same no matter. 20-40 is perfect to multi tame and not need to run frantically. Lower tames need monitoring for torpor but 1-2 narc will fill. Get plenty of veggies and stimulant ready for cakes too. They go fast!
If you are considering breeding these, go slam your hand in a car door a few times. It will be much less painful. Literally one veggie cake per percent of growth....and it grows slow.. Digests roughly one point of food per second, so feed a cake about one for every 7 mins (during event boost) and it will gain one percent of growth.