I think i will be too scared of leaks from the second floor to do the plumbing myself... if I had more resources, to cover my screwups, perhaps I would :)

18 months later, the kitchen ceiling was dripping water from completely corroded 100 year old galvanized inlet pipes.

I had fears about this, but figure - screw it! Take the risk.

The house I grew up in was built in 1926 and the wiring running through the ceiling was wrapped in cloth :D