Ive been running a test deck similar to this and had a 1-1 ninetales stadium lock to avoid stadium wars and lock to scorched earth. You should try it out
What set are the Vulpix/Ninetales from? People keep suggesting cards and not telling me what sets to find them in ^^;
In my deck I run 2 Sycamores and 4 N. It may seem like a steep line, but to me has proved to be better. First of all, N helps these slow decks so why not run him. And the reason for a high count of him is because of the Delphox with Mystical Fire from XY Base. You always draw 6 cards when your opponent may be hand disrupted if they are low on prizes and can't get their hand size back up. I do feel two XY Delphoxs are better than one being able to draw cards as fast as possible.
I've got plenty of copies of Sycamore, but I only have two copies of N that I know of. As for the XY Delphox, as I said above I only have the one copy. I could try and look for another copy if it's cheap enough, but given it could possibly go out of rotation two months from now it could be a bit of a bad move to get one.