I am soon to be the proud owner of a Fi BL 15'' and a Kicker KX1500.1. but my electical is stock and I know it needs upgrading. I was looking at a 180 Iraggi alt for my camry and a Kentic HC1800. Is this what i need? Is there anything else I should do. i've heard alot about the "big 3" what is that? i've seen it before but can't seem to find it >.< also i on the bat and alt, i could only afford one at a time...which is more important?