Well, I've done an upstairs bathroom before with my Pops. That was much more than this one will/is. And yeah, plumbing has always been the one thing I get apprehensive about.
I had an issue with a tequilla bottle and spinich dip at a party the wife and I went to not to long ago......apparently I clogged the sink (haven't done that in years) and decided to take apart the plumbing in the bathroom in the middle of the night. Made the worse mess I have ever seen in my life and took me 3 days and 4 trips to the local hardware store to figure out how to piece everything back together. I hate plumbing.
Life with me = never dull