Hey Joey -
If you want more output from your HT setup than an RS225 setup, you gotta go pro.
OscarJr got me looking hard at some pro drivers, and I found an 8 inch Beyma that will rock out.
If you want to collaborate, I could be persuaded to move that project up on my list.
I looked ALL over the pro landscape. If you high pass it at 80, it can probably hand 500 watts.
I modeled it up to 118dB with 300 watts full range.https://usspeaker.com/beyma%208p300fe-1.htm
I think something like this will give you less distortion and smoother FR than the Diysoundgroup stuff.