I think OSHA would require safety goggles around those things..
Gorilla Glue is just right, but weight it down at the same time it dries. GG expands something like 30% and makes air bubbles when drying, so if it can be no longer weighted, the rubber piece will stick up and may ooze. Use sparingly!
Depends on what the old pipes look like inside, if they are not corroded too badly, I would stick with the galvanized. Copper would be my 1 choice but unless you're going to replumb the whole house, there's no real need for the copper. However if you put just enough copper hanging down thru the floor you can convert the rest of the house at a later time without having to disturb your new wall. As an experienced handyman I would not suggest pex for anything in an unaccessible area, it tends to leak, unless you have the kit that actually thermally welds the fittings.
There is an easy way to tell they're a crap breeder that's only in it for the money. That ad screams it. Personally, I wouldn't have given that ad a second look, especially with the potential health issues CKCS are prone to. I'd want a well bred one. If you're set on the BYBd dog though, when you show up to the house to pick up the puppy it should be relatively evident if it's a puppy mill or not. If they do not want you to meet at the house, it's typically a puppy mill as well.
