Fractal design R3 or R4 are also good cases , but more expensive than the Antec
Some monitors may have display port connectors . It might pay to reconsider which ones you buy keeping in mind the connectors on the graphics card .
No graphics card is plug'n'play . They start and run in a basic 2D mode so you can see whats on the screen to help set things up , but then to make them work you install the driver thats on the disk that came with it . Its not a big deal