2 Battery's or not?

Hey everyone I have a 1994 Honda Civic 2 Door Coupe, and im going to be running alot of different electronic addons to my car. Such as, my RF Power 800.2, Chasing Neons for underneath the vehicle(beneath Body Kit), various Neons inside (Floorboards and Trunk for Fiberglass Housing), I have Indiglo Gauges, Fog Lights, Projector Headlights With Halo rings, Capacitor, and my other Amp for the highs and mids. What I am wondering is if I can get recomendations on what is the best way to go about handling the power supply. I know a bigger Alternator is a definate must which i am in the process of locating a reliable one, but is a second battery on an isolater a good choice? Or do any of you suggest another alternative? Thanks for the time and replys! J. R. Perry
Also Looking for a list for the 2nd battery of what I should buy to install it.

Eh... 2 batteries will only tax your alternator even more....