Wiring Aux Lights into Existing Wiring

Hello! This is my first post so let me know if I need to be doing something differently.

Here's what I got - I want to start installing Auxilary lights on my truck and I want my front light bar on an ON-OFF-ON type switch so I can either be running it off my factory dimmer switch or always on or always off. I've attached the factory wiring diagram which I've drawn on and highlighted what I would add in BLUE. Another factor to my equation is being able to run more lights this same way as time goes on, I like the idea of being able to use the dimmer switch as a sort of "master switch" if id like, or just turn things on and off as I please. I was planning on using one of those fuse tap "piggyback" connectors to tap into one of the high beam fuses - this will only be powering the "signal" side of my relay so I don't think it will overload any of the factory wirings?? But let me know if that's not the case.

So my question is - Can I follow the wiring diagram I've attached or am I missing things?

Please let me know what worked for you or if you know of additional resources that may be helpful!!