do you really plan on playing out (dj'ing)?
going to a gig with a laptop is the equivlent of telling the audence to F themselves.
Standered Club deck is the Technics 1200 mk2 (any 1200/1210 line will work) for pure scratching, I'd recomend the vestax PDX deck, increadable pitch (+/- 50%) as opposed to the techs standered 8% (or 16% on the mk5g)