If it is as you say it will pay for its self - If it has been stored it will be very low mileage, This will add to value, even if you get it done by other people:

Valet inside and out £40
MOT £40
Break pads all round £40
break fluid £10
Oil (good stuff) £20
oil filter £5
fix rust on arch £60

so we are at about £215 plus cost of car to get it in order cat at scrap is £150 so you need to sell for £365 and if the shell is that clean you will probably get double that!
Go on save the car or PM me and I'll do it!!!!!!