There's a fairly new (new to me, anyway) type of connector for metal/copper lines that is some sort of crimp connection. I haven't looked at them in real life yet, but I've been learning a little bit second-hand. They sound kind of neat..and IF I need to rework lines, I'll probably go for that slightly more expensive option instead of learning how to work copper the old fashioned/normal way.

I've moved a bathroom before and this project already has water to both rooms..so it shouldn't be too much finagling.