256,000 bricks.
I'm guessing you're asking this because you're trying to build it on a low-end computer?If that's the case, keeping the brickcount low isn't going to make much of a difference if you want it low for the purpose of hosting servers with the build; the lag void created by not using too many bricks is just as easily filled by having lots of players all playing on that server hosted from your low-end notebook/desktop.