Stripping methods?
I have done cars both ways.
The blasted car.
Before blast I scraped the underside under coating off, cleaned engine bay with heated pressure washer, prior to blast. Then blasted those areas, plus inner fenders, trunk, inside cabin
Blasted cleaned and epoxy coated with PPG DP PRIMERS.
Then used a finer grit media on rest of car.
I used to have a Redi-Strip franchise by my shop.
Cost was more But!
It was way less painless and used same PPG DP primers.
But shot inside frame rails with a long tube as everything was now bare.
Dipping is my Favorite.
Sadly I no longer had it available close enough and I can blast as I go section at a time as needed myself