too be fair that looks realy tidy for what it is! i just hope you dont find any rust behind the arch's but its been stood so long its not seen salt for a while either so you maybe lucky with rust!
Give it a good clean up asap with a jet wash and update us with pics, im intrested to see how she looks without the green! haha
look into getting your interior steam cleaned they will probably come up like new aswell.
Good look with the progress, i love a good fez!