WoW!!! You have done a TON of work! Way to go, Cynthia!
So, don't worry about fixing a little bit of floor, Cynthia, you are so far in, that's only going to be one line in a great long list of fantastic things to do to your trailer.
And yes, it will be relatively easy to do as described above. As will the new PEX and bathroom layout.
I'm dying to see how you are going to do the new layout. Do you plan on using all the other existing AS furniture?
And thanks for posting your status so far. It will be a gorgeous trailer when you are done.