DeeJay SiBoogie

If you going to use Traktor I’d go with using the CDJs as the controller rather than the mixer especially now that 2.5 supports advanced HID and give you a wave display on the CDJ. I’d set Traktor to external mode and use the nexus FX. The other option, I’ve used it live, is to use RekordBox via the Ethernet link. I would only recommend this if you find that’s it’s stable, it can play up. When linked you get 2 CDJ icons and you can just drag n drop you tracks in and they will load in to the CDJ or you can you the scroll search function on the CDJ to search through you collection.
For me Traktor was a means of accessing a large selection of music and being able to play it. Burning CDs is a pain. I never really used the in built FX once I moved from a controller to multi format players so when got the 900s I no longer needed Traktor as I had .
You’ll find plenty of info about RekordBox, the CDJ900 and 900nexus on YouTube and quick answers over at PIoneer, I also use that forum. Also take a look in the mix section here and I’ve got a video of me using the the CDJs and RekordBox

You only need to worry about aggregate if you have a mac, which you are if you’re on a windows laptop it’s plug and play. Aggregate set up is to tie the in built sound cards of the CDJs together to make one sound card. However, as they have a 900nexus mixer you may not need to as this also has a sound card and is also midi.
I have the CDJ900 but use windows and it was just plug and play but I don’t use Traktor anymore. Another option you have is to download a copy of RekordBox from PIoneers web site, analyse your music, make some playlist then put the on a USB drive. No need for the mac just take the drive and plug into on of the decks and it’ll be share across the link. Easier than taking you’re mac. Head over to the Pioneer DJ Forum for more info on aggregate set up for your mac. You’ll love the 900s and nexus mixer don’t miss the chance to use them.

That looks like a toy it’s so small.

It’s horses for courses. There are different mixing techniques for every situation. When I do weddings etc I don’t beatmatch I do fade ins/outs and talk overs. You can’t hate a DJ for doing it his way and making a good living by it. I even play pre-recorded megamixes and mashups, I don’t hide the fact as I’ll be at the bar or in the gents. However, put me in a booth and I’ll mix away to my hearts content, I don’t need to warp tracks to help me fit them in my set, I don’t need a sync button, I don’t need to look at a passing waveform to know when the break is coming. Some do, some don’t I really don’t care. What really matters is that the floor is rocking. Habit means I’ll look and listen to what a DJ is doing and either give him/her a nod of appreciation or just walk away if there’s not a lot to the style but hate not.

If a DJ is making money he or she must have some talent, zero talent means zero bookings, and zero pay.

Google is fantastic

http://www.native-instruments.com/forum/showthread.php?t=161825

Some of my sets are pre planned some are off the cuff but all of them are saved as playlist (I use RekordBox) so that if it’s a great set I can always use the same track list again.

When I used Traktor and iTunes I would create playlist in iTunes and use those in Traktor. I would create playlist specifically for the gig I was doing plus have the crates for main collection. The only thing with the iTunes crates in Trakor is the they’re read only. I would suggest importating all your tracks in Traktor if you haven’t done so already so that they’re all analysed. The Bibile is a fantastic book for learning the full ins and out of Traktor.

Recording is no different to playing live, mistakes will happen. Recording allows you to listen back to those mistakes, analyse why you made them, what you did to get out of it, what you could have done better to get out of it in future and what you should do not to make the same mistake.
Remember all DJs make mistakes