Want to mount my outlaw train horns with my shockers

Would this sound like garbage if I had both hooked up to blow at the same time? I was planning on wiring them seperatly but having a switch that would allow them to blow together.

Try it and decide for yourself!

I plan on doing it Monday. I’m just trying to figure out how I’m going to wire it all. I was thinking that if I could wire it so that the shockers run all the time and then have a switch that will allow the outlaws to blow at the same time. I figure I will need relays but figuring out how i will do it all is the tricky part.