Reply to Basic Setup

hello, i just started working with tractor 3 for a few months.
I like the way mixing with traktor, so i spend much time to improve my skill.
Now the digital mixing got my attention and i want to act more professionally.
So i need to buy new hardware, to stop that klicking with the mouse
I do need some informations, if my setup i created is good or not. If something is missing, please tell me
the problem is i do not have that much money yet, so i will buy the hardware step by step every month

mixing software: Traktor 3 (yet) Traktor pro (want to buy)
Midi Controler: Reloop Digital Jokey (want to buy)
PC: dual core 3GH 3GB RAM 350 gb decksize (yet) soon laptop
extern second audiocard: problem, got o idea what is good or not, please help

Thanks for help

ps: if my written english is not that good, i'm sry ---> german