need some advice

I need help with installing a multi monitor system i have:

2   5.6 sunvisor monitors Performance Teknique

Dvd player Performance Teknique--1 audio/video rca output

Overhead Alpine monitor TMX-680a

Alpine cva-1004 --only has 1aux/input

Alpine kce-104v the expansion module for the 1004-2 aux/outputs and 1

aux/output for the 1004 and 3 aux/inputs

I have a pheonix gold amp xs2500 pushing two 12-inch hx2 500wrms each

I have a 4-channel PPI amp pushing 2 sets of Boston Acoustics component sets

this is all going in a 2001 chevy silverado

Question 1 is do i need a video amplifier  since i already have the kce-104v?  

2. if i connect one sunvisor to aux2out and the other sunvisor to aux3out will all aux/outs show whats playing on the dvd player thats connected to aux1/in?

3.And since i have the kce-104v do i need an  fm modulator to hear the radio from my stereo system?

4.Not really sure if anyone knows this but on the kce-104v there are two wires 1 is rear select 1 and the other is rear select 2 what r these two wires for and do i need to connect them since im not going to be switching from monitor to monitor?

5. how to bypass the security to watch dvd's while driving would be alot of help?