Way too many variables to even guess. Why not call in a local sparky and get an estimate???
What number are you talking about" How long can it take you ask. It has taken me over nine years so far to rewire my place, with it still in progress. A good crew can rewire a place within a week, or three days if they have enough people.How were you able to come up with that number so quickly? Lol.
Also, how long will it take to do this project?
Unless you've got a fuse box, or you want to get rid of knob & tube, or all of the outlets are ungrounded, there's no need to completely overhaul the electric, old wiring is grandfathered in. Just fix the individual problems where they occur.If we were to buy the house, we would have to gut the entire house so an electrician could re-wire the electricity to bring it up to code.