Simple Project : All New Sirion Mod#1

Jut got a new "All New Sirion" for my wife.
1st mod will be the audio side, as the stock really thin in my ear.
Head Unit => Pioneer double din with bluetooth audio/phone function, i had one in my old "kijang" and really like the output. The phone is for me, bluetooth audio/usb port is for my wife, and dvd player is for my son. I need to buy the new bracket and do little mod on the bracket to make the head unit can be installed.
Front Speaker => JBL 10cm (4inch) coaxial, adding extra punch on the mid & high area
Rear Speaker => Pioneer 16cm (6.5inch) coaxial, the stock one shake too much when the i crank up the volume
Sub = Pioneer 8inch slim sub, stylish in small package but give extra punch for low freq. The seller said this small sub can't deliver enough SPL to shake the car. I don't need one, i need just for balancing the sound.

Once all set (by me :) ), i call my wife to hear it, and she smile "it's enough…" while reducing the sound level from 9 to 6. Hmm, that's a reason i am not looking for power, just to live up the cabin, i'll never been able to set the volume higher than 6 :)