oh dear! the golf ain't as good as expected!!!ÂÂÂ

just cleaned my golf for the first time (had it a month) but as it's a non runner it's been sat on the drive. It wasn't particularly clean when it arrived as it had been stood for 3 months!
Poor car.... where do i start? all mechanical things have been done for m.o.t (it took 3 attempts to pass) now its just purely cosmetic matters!
Does anyone know what the black stain is that runs from the lower corners of the boot? i've seen this on quite a few golfs. Can i get this off? i managed to rub one side off with a sponge, but it's left a shiny mark on the lacquer - atleast the black's gone, but on the other side it' really thick, and well stuck on, there are a few scratches in it, where i can see the paint but don't really 3want to scracth it off!
my back bumper is a poor, but acceptable - there is a brownish mark that will not come out - so this may be an excuse for big bumpersÂÂÂ

Anyoneknow roughly what a set of big bumpers for a mk2 will cost?
Rust spots - how do i remove them (get them removed probably... don't want to break a nail), decently and cheaply, they're only small, apart from one larger bit on the bottom of a rear door
Clutch - the clutch is really high so im guessin i need a new one, any ideas of the cost for one of those?
I'm sorry bout all the questions, but i usually rly on ym dad for this kind of info, but him and my mumare away for the weekend (again!!! - they're away about 50 weekends a year!)
Hope you can help me! - i know you bright sparks can!ÂÂÂ
