This article, posted in another thread a few weeks ago, besides just being an interesting read, on the 3rd page has some real world empirical data points on how this courier (dispatch) rider got his 3rd gen to ultimately reach 852,000 miles on the chassis before it finally had had it. The first engine lasted 440,000 miles and the 2nd was at 412,000 when he retired the bike. He also touches on what he did for chain maintenance and tires. None of his practices may fit your situation and he was unusual, doing long stretches at a time so the number of cold starts over miles ridden were likely way lower than the average rider who does maybe 3,000 to 5,000 miles per year. But as pointed out, oils now (as well as other ancillaries such as tires and even chains) are so much better than they were 20+ years ago that you can't go too far wrong at all with your choices. Regardless, it seems likely that we will wear out before our engines do!
Something that I started doing 3 years ago was to install a magnetic drain plug in the sump. I encouraged a couple of friends that I assist with maintenance to do the same - one a KTM and the other a Kawi. I'm somewhat amazed at how much sticks to the plug during an annual service, which can be in the 4,000 mile range down to just 1,500 in a lockdown shortened year such as 2020. There is always a black ball on the end of it. If I use a heavy paper towel to wipe it off and keep it centralized, I can turn the towel over and use the magnet to pick it up, so there's no question it's magnetic and not just the usual buildup of oil contamination over the miles. Regardless of the oil you use, a magnet can keep that out of your rotating assembly. I also have two magnets I apply to the outside of the filter. Upon cutting one open, I found the same - two black dots on the inside of the can where the magnets had been. I got mine from Dimple but there are likely many sources. Rare Earth magnets will be the strongest and may catch more of that than Chinese knock offs - hard telling.
Britains highest mileage rider.pdf