If your new to animated display's or just having a hard time wrapping your mind around your electrical needs.
Here is best display tool around. It is the Quartz Hill Calculator. It is used to track electrical usage/needs.
You enter all the lights into the page, and then setup your controllers.
I have tweaked it to fit my needs, but it is pretty great on it's own.http://www.quartzhillchristmas.com/12.html