If it were me I would start with the underbelly first and not the body. I use plain old sand from the hardware store at $2.50 to $3.50 a bad. One store I use play sand because it's dry. In the other store I get general purpose sand because it's dry. I don't recover the sand because basically I have not been set up to so so. I just shovel it into the rocks and let it sink in. I can use it there anyway.
In the future I would like to catch it with a tarp but I will need to run it through a screen other wise it will clog the tip.
You might do everything except the body and let them soda blast the body (since sand is cheap). I use a paint suit WITH HOOD. I don't have a blasting helmet. You will be shampooing your hair for an hour to get the sand out. I need to try a blasting helmet because I need the layerd screen where you sand a while and pull off a layer. I have been using a clear shield but I found goggles cheaper. ($2.50 at HF) Use for a while then pitch.It odoesn't take long before you cannot see out of them.
don't forget to wear a mask. That stuff is bad for you to breath. The constant iritation in your lungs can cause cancer.
Sure you don't want some one else to do it? Got your tylenol? I ran out of mask. Here I am holding an old aircraft window in fron of my face:
