Thank you for your input. I have read all your posts several times to make sure I have understood them in the correct way.
I will be instructing in small club style environment where my input seems to be expected. Verified by this discussions, for me personally it makes most sense following the checklist as a do list on the ground and using memory items and flows in air and emergencies. Killer items is a good point and something about which I haven't heard before. But as I said earlier I will consult my CFI and try to prevent any excessive creativity.