Why dont you give your self a budget say £800, get the car looking nice, put the bumpers on and get it on the road.
then you can either make a decision to sell it, or if your still keen on it then modify and alter it to you tastes.
Or just work out in ur head what you feel the cars owes you and sell it as a project, if the bodys as rust free as you say then, and as its a 3door, then its bound to sell quick anyway.