So is there a right way, or a wrong way? Time will tell.
Why have Ford trucks with mod motors had such a problem with broken studs, stud falling out, etc ? Over engineered or just using inferior materials? Maybe both?
From my observations, there was no corrosion on the oem studs, nor sealant/antiseize of any kind. But there is a non thread area on the studs that would prevent them from bottoming out in the head. This is where they break and probably lock into the head. When I drilled one out using an stubby bit, it actually went about 1/8" further into the head. Drove in an extractor and literally backed it out with my fingers. Don't think you will have any problem with left hand drill bits.
Remove the motor mount bolts, loosen the a/c compressor on right side and same for the p/s pump on left side. Move them out of the way as far as possible, place pc of wood on jack saddle and lift one side of oil pan as high as possible to allow better access to the studs.
You have a great plan for removing the studs, so do it. Your overthinking the gaskets. Hi-temp RTV is your friend here. Also consider using a second nut on the studs after the first heat cycle..
btw, I used the same s/s studs that you have.