Don't know why you are making it so complicated.
You don't need to "clean" the chain. It does nothing useful and in some cases could do harm.
With a centerstand it takes me between 10 and 20 seconds total time to lube the chain. I do it when I stop for gas (and after every ride in the rain.) It is so easy and for me works so well I can't see why people are overthinking it.
So I got to thinking and just for giggles I did some (very) rough calculations.
Based on an mileage estimate of your various DL’s of 312,000 miles and say lubing the chain every 200 miles, that leaves you at 1,561 times lubed. Figuring about 1 minute per lube, which includes lube time, putting on centerstand, getting the lube out and process reversal would be 1561 minutes or roughly 26 hours. Seems like a lot, but....
Based on a low estimate of replacing your chains every 40k miles would equate to 7.8 chains. Figuring chain and sprockets are $200 us puts the cost at $1560 us and about 2 hours per replacement would be 15.6 hours
As many here lube less often, say every 400 or 600 miles allows them 13 hours or 8.6 hours lubing time respectively based on your mileage. However, the majority of them are getting but 20k miles before replacement would be changing chain and sprockets 15.6 times. At $200 and 2hours per, leaves them at $3120 and 31.2 hours replacement time.
Based on these (very) rough calculations and considering the lube cost difference minimal, in 312,000 miles you’ve spent roughly 41.6 hours in lubing and chain/sprocket replacement time at a cost of $1560 US
One who lubes every 600 miles but replaces the chain/sprockets every 20K miles would have spent 39.9 hours on lube and replacement time At a cost of $3120 US.
In essence you’ve spent an additional 1.7 hours and saved $1560 US. Not a bad payback.
And yes, I adopted your lubing intervals a while back and am currently at 35K on my chain.
This is not imperial data, don’t quote me, your calculations will vary, someone with more time and accurate data will spend needless time to better calculate what few care about.