Before you plug in a 1000 system, you need to go have a look at your circuit breaker board in the cellar and make sure that the breaker it's going to be on is not overloaded and is big enough to carry it.
I use a 20amp breaker for just 1 1000 light plus like a little fan or 2, but that's it.
And make sure you get a heavy-duty timer too, either a commercial time-clock or one rated for 18 amps and set up with an outdoor water-resistant cover.
You'll sleep better.