well im looking for an amp kit and i would first like to know is an amp kit an amp kit or does it matter which brand i get? Im leaning to go with all JL just because thats my prefrence. so im going to be running a JL 300/4 to some Focal 165KP's and a 500/1 JL to a 12w6. here are my ?

do i need 2 power wires or can i get a distribution block?
what gauge power/ground/speaker wire do i need for the best performance?
how many sets of rca's do i need?
do i need any kind of ground lugs?
do i need a master ANL fuse?

and last but not least whats a barrel connect?

everything im talking about canbe found on the JL site.