using an ultra sonic cleaner for the screens is a little crazy, just blow them out with wd40. Also paper filters , filter better than those stainless steel holed thingies, plus you don't have to clean them.
Im all for the 20w50 MC oil 3.99/5.99 per quart or even spurge to $8 per quart, I run it in my ktm 500 race motor, and it does well.
Now that motor , I run 800 to 900 intervals or 15 to 17 hours and that on an offroad, I also don't change the filters every change, but do clean the screens, and nothing is in them. The magnet might have a little smooge.
You mentioned that you don't have time to change the oil once per month, but at 1200 miles that would be about every month and 1/2 for 2000 mile oci. But now talking about ultra sonic cleaning, that's super time consuming, and IMO nuts!!