I have a 2000 ex and i am going to be installing a dual amp hookup in my car. Can i get away with 4 channel 4 meter rca (13 ft) and 2 ch rca 4 meter (13ft) for both amps in my car?

Probably, it really depends how you're going to route it, and how far away your amp is

If it's under the seat, definitely
If it's right behind the rear seats, probably
If it's further back in the trunk....maybe

I will be running them from behind the radio along passenger or drivers side of car and to both amps. probably mounting both on each side of 10" subwoofer box

13 foot be okay?

I know alot of ppl on this forum have installed amps in my car before?"

13 ft should be enough
Make sure that when you run the power wire on one side of the car, you run the RCA's on the other side of the car

Less interference noise

Yeah im just getting for a real good price so didn't wanna get the wrong lenth and then it wouldn't reach. The next size up from it is 19 ft n that'll be so long I feel like. Its just 10ft 13ft and 19" ft from this company and 19ft i would probably have so much slack!

Are all the side panels that I want to pull up to run wires underneath them, are they all clips or what?

Yeah, pretty much all plastic clips

5 meter so like 16ft your gunna be short unless u mount right on the back seat

Go with the 19ft. Having the extra will not be a problem, just tuck it away. I have 25 feet and it is definitely way too much, but I was able to hide it without any problems still. Too short of a cable is always way worse!