I agree with the money thing. I wouldn't spend that much on a stereo. But it's all relative to your finances and like you said, "your dream".
My father swears I'm crazy for spending 20k on a SXS. He says it all the time. "That's a waste" "I'd never do that". Etc.
Then I tell him, I would NEVER spend 3 grand on a set of golf clubs.
So, would I spend that much on a stereo? No. But with the lift, tires, and wheels. I may spend that.