Setup for under $1,000?

I had posted previously about getting some decks, but I never did get them because I didn’t have the money at the time. Now I do, but I’m still not sure what I want to get (and the "dj" in my name comes from an old joke, not because I think I’m a deckless DJ, =).

I have some PC speakers (bedroom dj, maybe I’ll get some better ones later), headphones, and all the appropriate cables/adapters (1/4" to 1/8") and $1012 waiting to be turned into some gear.
I want to be able to play mp3’s, so I’m going to need either some CDJs or a Serato setup.
I tried to work it out with CDJ800’s, but I couldn’t get it into the pricerange. So I was looking more and more at this Scratch Live deal- has anyone used it? (well obviously, but have you used it?) If so, is there any kind of delay?
I realize that I’d need a laptop, but there’s plenty of those around here, I’m sure I can find some friend’s broken one and fix it up.

So the first question is do I want to get a Rane mixer with the Scratch Live capability already? Or do I want to get something else, and then the separate Rane box? I’ve only seen one all-in-one type deal, and that was outside the price range in itself.
Next question: how much to spend on the mixer and the individual decks?
And finally: which decks to get? When I first started looking, I pretty much dismissed vinyl decks because of my vast library and utter lack of any actual vinyl.
So I’m not sure what to do about those. I know very little about them, but I got that I want direct drive. I know that people always have good stuff to say about technics decks, but am still concerned about the price. I’ve heard good stuff about the 1200’s, but if I get two of those, they’ll also be out of the pricerange by the time I get Serato.

Should I go back to looking at CDJ’s?

The thing about the mixer is that I’m not going to be doing any heavy scratching, if any- I mean, I’m probably going to try to learn, but honestly speaking, its not going to happen very much.

I plan on playing mostly house/trance, if that makes any difference at all.

Thanks for the help guys!