It's been a few days since my last post, so I figured I'd post an update. I ordered my front comps and 4-channel amp last Thursday, just waiting for them to arrive now. In the meantime, I've been trying to figure out the rest of the stuff I need to know for installation. I will probably be doing the Big 3 upgrade before anything else (not looking forward to it; my alternator is in a really hard-to-reach place, as far as I can tell...), and I figure I might as well use 1/0 gauge wire for this. I've seen KNU recommended a lot when it comes to wiring, but most of their products seem to be on the expensive side.
However, I'm unsure as to what gauge wire I should run to my amp. Eventually, I'm going to have a total maximum RMS of about 2100W between the MB Quart ONX4.80 4-channel and ONX1.1500D monoblock. Although I don't expect to use that much power, I may very do so with 2 obsidian subs... but I also want some room to upgrade and I don't want to have to replace the wire if I ever get a better amp.
Also, I'm still kinda lost when it comes to sound dampening. I've looked at a couple different brands but haven't found many how-to's when it comes to measuring how much I'll need or how to correctly use it.
So, these questions remain: Where can I get some good budget wire for my Big 3 upgrade? What amp wiring/installation kits should I be looking at? What kind of sound dampening products should I be looking at and how do I determine how much I'll need?