Cost of replumb and rewire in a 1970s 3 bed terrace?

Hello,
Anyone got any ideas on costs to replace gun barrel piping and rads to a GFCH system in a 70s 3 bed terrace house in Dublin . Back boiler to the fire(s) which may need to be disconnected as not in use? All wooden flooring.
Also, it will need a re-wire. Really old fuse-box.

I'll just throw this into the mix too. I'm thinking of internal insulation to the walls so might be able to tie in the heating and wiring with this too. Any ideas?

I know it won't be cheap , and there may be grants available from SEAI, especially on the insulation.
Look forward to your replies.