Hi All,

Please help me setup a good car audio system.

 I own a Pioneer DEH-P6850MP CD player. The specs. are as below:

Audio Features
MOSFET 50 Watts x 4 high power
EEQ (Easy Equalizer) 
7-Band Graphic EQ within EQ
5 Preset + 2 Custom EQ Mode 
Bass and Treble Tone Controls 
Selectable 3-Mode Loudness Control
LPF Subwoofer Crossover (50, 80, 125Hz @ -12dB/oct.)
Normal/Reverse Subwoofer Phase Selection
Direct Sub Drive (from headunit power)
HPF (High Pass Filter 50, 80, 125Hz @ -12dB/oct.)
Electronic Volume / Balance / Fader controls
4 Volts RCA Preout Level
3 prs RCA Preout (Front + Rear + Sub/Non-Fading)
SLA (Source Level Adjuster)  

And I do have a old SONY EXPLOD XM-502Z amp. The specs. are as below:

2-Channel
MOSFET Power Supply
50W x 2 continuous power
80Hz low-pass filter
100 Watts RMS @ 4 Ohms
Active Protection Circuit
RCA and Speaker Level Inputs
Gold Plated Terminals

Making use of the above mentioned player + amp, I want to build a system. I want to add the following:

1) Rockford Fosgate PL2-110 Subwoofer 

2) Rockford Fosgate Punch P300-1 mono amp. to power the PL2-110

3) Front door component speakers (5 1/4"): component S50

4) Rear tray (6'X9'): Polk/MOMO MMC690

Now my questions are:

a) Whether this setup works fine? 

b) Is it okay if I don't use an amp. to power front  and rear speakers?

c) Can i use my old XM-502Z amp. instead of buying a new Punch P300-1 mono amp. to power the PL2-110 ? Are there any compromises in using a 2-channel stereo amp. (sony XM-502Z) in bridged mode to provide 100 RMS to power the PL2-110?.

and finally,

d) Do you suggest any better setup using my existing Pioneer  DEH-P6850MP  player and SONY XM-502Z amp.?

Thanks in advance,

aaRDee