Anyone else get more confused!!

boomboom

I have been searching for 3 hours trying to figure out what to do here. I am trying to decide to use the stereo stuff I have or do something different.I am confused I have asked before but please lets hear opinions.Thank You

I have:
SUBS-Two Memphis Audio Subs M-Series
16-MAD1000 Memphis Audio Amp
Zenclosure Dual up firing box

MIDS-Hertz Space Series L with tweets and crossover
16-MA3004 Memphis Amp 75x2 150x2 bridged

HEADUNIT- getting Alpine 117 new model

Do I sell the subs and get 1 real quality sub like a 12inch polk sr series? but then the amps don't match.I am tempted to just use what I have since I liked the sound of it in my old grand prix.The hertz space are brand new I haven't used them ever.