How am I going to prep this body for paint?

[maddddog]

I just moved the new project into the new shop yesterday.
I want to clean up the body, prime it and start working.
Not sure which direction to go here.

Some say blast with various media, walnut shells, glass bead etc...
others say have it dipped in sodium hydroxide (with electricity) ....
still others say just put ospho ( phosphoric acid) on it and sand and paint .

Any thoughts on this topic?

Here are a couple pics of the project Topolino.

Thanks