Centaurus - no, no, no, no, NO
Use a checklist every time.
This is not wartime. It is not a matter of life and death that he geats airborne FAST. I don't know about pilots in your neck of the woods, but I know many of RAF pilots who used checklists.
Failure to use checklists leads to complacency, to missed items, to bad practices...
As an instructor and Flight Safety Officer, I would be appalled if any more pilots went the way of a former Chief Pilot of mine, whose shutdown checklist appeared to be:-
- Switch off engines
- Get out
- Head for pub
I am disappointed that, since you list your interests as "flight safety issues" you should encourage an apparently low-experience pilot not to use a checklist.