Timer Question

I am trying to use a timer to control my breakers in my breaker box I have 6... 20amp breakers in the box I have 1... 1000w light per 20amp breaker i am runing 4 1000w lights then i use 1 20amp breaker for A/C unit then the last 20amp breaker i use for fans. I want to no how do i and what type of timer do i use to control the 4 lights all other equipment is cool not being on timer. I WANT ALL MY LIGHTS TO RUN OFF OF ONE TIMER. Any links web sites or words of advice would be very helpful.

The 'Professional Series' Helios 2 operates four(4) 120 Volt ballasts for a maximum of 4000 watts HID lighting over your plants. It features a 15 foot relay trigger cordset that plugs into a wall timer that can be configured in a variety of timing patterns and will accomodate any gardens requirements. Three (3) screws under the back panel cover make this timer easy to wire into your power system. The lighting controller has a convenient 'ON/OFF' switch that makes lamp cleaning and replacement easy. The Helios 2 has the quality, features and functionality you've been looking for in a HID lighting timer!

http://www.titancontrols.net/products/lighting.aspx

There are other products available, just aearch "grow light controlers"

You want a lighting controller (contactor bank).

One could custom a box that does what you want but typically a single heavy gauge homerun would suffice.

timer from home depot

Home depot timer is the one i want to use!!!!! Now i need to no how many total 20 amp breakers can i control with this type of timer also is there a link or something to show how these things are hooked up or how they work?