Looking into a new computer, will it run traktor fine?

Looking into buying a computer solely to run traktor pro 2 and other music programs (but mostly traktor.) It'd be this one or similar:

http://www.bestbuy.com/site/hp-touchsmart-15-6-touch-screen-laptop-4gb-memory-750gb-hard-drive-sparkling-black/5153008.p?id=1219112461695&skuId=5153008&st=catego ryid$abcat0502000&cp=1&lp=1

It looks to meet or exceed all of the specs, but I'm told the ram may not be enough. I plan on having traktor run as the shell for the computer, with everything else disabled. I feel like a total fool for asking all this, but I just want to make sure before I blow $400....

as long as it has these specs you should be fine: PC 64bit 2.0GHZ intel core 2 duo, 4GB RAM, 1gb free disc space

or Mac: 4GB Ram core duo 2 2.1-2.5GHZ (or higher)

It meets the specs, but there's no guarantee it will run perfectly.