How far do you want to go is the answer?
If you are wanting to replace everything with new genuine parts it's a small fortune,if you are lucky enough to be able to reuse some of your existing parts like suspension that will help.
I'd say from recent experience £3-400 for bolts,£60 for various clips,£150 for zinc plating,£300 for powdercoating,drop links £30,bushes £2-300,paint,materials £200,prob £80 on things you will buy to clean the underside,degreaser,wire brushes etc,a new fuel tank,pump cradle etc.
The list goes on,luckily I have access to a 2 post ramp and my good friend is a painter so this has made the job easier and simpler,I have went the whole hog and I'd say the estimate of 5k isn't far off if you are replacing everything.