Keep in mind that this whole signaling thing is very new, and so no one is very certain how it will go.
However, in so much as there is a consensus, it is that the one way to waste a signal is to signal a program that you are completely not competitive for.
In your case, though, your application is quite strong. So I do not think it would be a waste to signal some of the very competitive programs.
Since geography is important to you, I would focus on that and use your signals at West coast programs, spanning the range of highly competitive academic programs and community programs you would be happy to go to.