You may also want to look for Soda blasters. The one in my area charges about $1000 to do an exterior and $1250 to do int & ext. It is water souluable so you dont get sand/media left all over the place. Guy does some cars with the rubber and trim still left on them as it does not harm them. It also does not generate as much heat so less panel warping concerns. It does not use acid either so you dont have to worry about left over acid eating away from the inside out. It is also bio degradable and environmentally friendly...
google is your friend for things like this
Best regards,
Michael
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Michael 
'82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah
'13 Cayenne GTS