I agree on the MC. Sanding would be the last option. There are several brands of stripper out there. Kleen Kutter (liquid, not semi-paste is what I use). I used MC stripper, bought in 55 gal drums, for years when I did such. Yes, it is potent stuff, but it is water soluble. Just don't breathe the fumes. By the way, have GOOD ventilation -the fumes are HEAVIER than air and will sink to the floor, rather than rise to the ceiling. A good squirrel cage fan on the floor will take care of the fumes. Or do it outside. After stripping take a power washer and wash it off. Let dry overnight, then proceed with finishing just as you would with a new piece.
Jim in Mayberry