00CivicVP

How much would the Big 3 cost? And where can I get yellowtop battery's and which should I buy?

I am planning on buying 1 12" Fi BL. Not sure on what add ons I will get. But I was wondering about the Audioque 1200D. Would this be enough to power it? I know that some amps are way underpowered then they actually are. So my main question is how reliable is audioque? The other amp I would get would be the MTX TA92001 Also what other eletrical upgrades should I get, I was thinking a yellowtop battery, anything else?