Speaker and Amp Help

[DodgeRam1500]

Need help I guess matching speakers and my amp. It will be going into a 4 door sedan car. Below I have 4 options. My questions is it worth running a set of 3.5" coaxials in the rear passenger doors. And if I can can I still run it off a 4 channel amp or do I need a 5/6 channel amp? Will a 5 channel amp work also?

Option 1.

Front - Alpine SPR-60C 6.5"

Rear - Alpine SPR-60C 6.5"

Amp - Alpine PDX F6

Option 2.

Front - Alpine SPR-60C 6.5"

Rear - Alpine SPR-60 6.5"

Rear Door - Alpine SPS-410 4"

Amp - Alpine PDX F6

Option 3.

Front - Alpine SPR-60C 6.5"

Rear - Alpine SPR-60 6.5"

Rear Door - Alpine SPS-410 4"

Amp - JL Audio XD 600/6 or will a 5 channel work?

Option 4.

Front - Alpine SPR-60C 6.5"

Rear - Alpine SPR-60C 6.5"

Rear Door - Alpine SPS-410 4"

Amp - Alpine PDX F6 (for front and rear compoents)

Door Amp - Run a small 2 channel amp for the Alpine SPS-410 4"

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[shizzzon 10+ year member]

You do not need rear unless you need to entertain back seat drivers or are designing surround sound in your car.

 

[DodgeRam1500]

Well I'm gonna change all my speakers but I just wanna know if its worth running the 4" in the rear doors and if I should run it off a 4 channel or 6 channel amp or just get a separate 2 channel amp.