I was in a slightly similar situation but I already had my 1000mk3s.. I was tired of constantly burning cds each week for my radio show so I had to get Traktor or buy 900s and I chose Traktor because it was cheaper. I haven't had any problems with the CDJ1000mk3 w/ Traktor combo yet.
But in all honesty, I prefer no laptop. Mixing is much more organic that way and the jump drive option would be amazing.