Help choosing speakers for a 7,000 subwoofer system that is clear, accurate, and LOUD

[iCarfly]

I have 2 DC Audio level 5 15's 3500 RMS each on order.... right now I am currently running 2 rockford fosgate 15's with 1200 RMS each and 2 sets of HSK 165 XL's 300 rms mid/highs....... the sound right now is phenomenally accurate and gets pretty loud........... but not loud enough. If I had 2 DC Audio 15's, what mid/high range would you recommend?

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