Replacing a leaky toilet shut off valve

I replace an old valve that was leaking. I can see after watching this video, that I need to get back there, clean everything up, possibly pull off the trim, and see if there is any damage to the flooring or wall.

If I find damage, I will show you when I pull up the toilet and fix the wall and floor.

Of course, I think if have to do that, I will just pull out the vanity, the tub, etc and redo the bathroom, which is something I have been considering for quite a while.

Putting in a lower, porcelain tub, and putting in a small window is something I have been thinking about...

The exact valve I used is below
http://www.amazon.com/dp/B000BO9MUY?tag=markspage0b-20&camp=0&creative=0&linkCode=as4&creativeASIN=B000BO9MUY&adid=0SXFMKTH4MBG2PV1X6DY

Видео Replacing a leaky toilet shut off valve канала The Suburban Experimentalist