I'd shoot for a budget of $2,000. You probably won't need this, but I wouldn't expect that the newest tech will be any cheaper than the current high end builds. Right now, I'd consider $2,000 to get the high end builds without spending something ridiculous.
Besides, it's better to have too much than too little. Also, if you save more for it now, you'll earn more interest, so you won't have to actually put as much away later.