The rust in the boot don't look good around the arches . I wouldn't fancy scrapping any off to see what is under it Sorry but I wouldn't like a tap up the arse in that . Inner wing will need a complete strip down top and bottom .

Rust is always worse than it looks,it works its way out so check It

Sorry to be so negative but I wouldn't go anywhere near 9k , your in the 4/5k bracket at most