$600 to sand/soda blast eng compartment and underside?

i done media blasting for a short time and i can tell you this. the media will remove the undercoating but it takes awhile and causes the panels to get hot, cause the undercoating doesnt come right off.and it could warp your panels staying in one spot trying to get it off. when we blasted we always steam cleaned the car 1st taking 90% of the undercoating off then blasted it as far as soda blasting i wouldnt recommend that either as it leaves a residue on it that needs to be washed off or your paint and body work will not stick right to the metal there are too may nooks and crannys on the under carrage that the soda material will still be left in hence lifting the paint materials and will start to rust im for the media blasting but make sure they steam clean it 1st showing pics during the steam cleaning process and blasting process seeing how you are 350 miles away and all
goodluck and hopefully this helps