Interesting thread, I sympathise with your plight as I'm not a naturally organised person and have to put a bit of thought into it. Regarding the stopwatch...I don't even own one. I made a point of becoming familiar with the timer on the ADF...I personally found that much easier to incorporate into the scan during the instrument flying on the CPL, particuarly witht eh timed turns etc when the last thing I wanted to do was get distracted from the scan. I flew the Duchess for my CPL where the Avionics along with the ADF are located centrally. Just a personal preference I guess but try it out one day ad see how you get on. However if you do, just ensure you wear a good watch so you've got a backup.
I too use an A4 Kneeboard and have an A5 ring binder on the left hand side which contains a quick refernece sheet I made up early on in my CPL....it contains all the V Speeds, Pre-Landing Checks, Key Frequencies for the South of England etc etc (albeit all of these soon become memorised but there have been a couple of time Ive had a brain fart firing and its great. Worth a go but dont make it over complicated!)
Hope this helps.
2W2R