If I want to strip my car to the metal..... what do you recommend?

I use aircraft stripper and 80 on a DA for tighter areas. yes, it is nasty but it is also fast and efficient and will get you 90%.
I use newspapers to catch droppings. I do hood and trunk off car. The sides are easy just tape off jams, holes, and gaps to keep the stripper out. I do the cowl and most of roof with a DA.
I roll up the stripper soaked news paper to contain it. I wipe to metal down with lacquer thinner.