Why not get better speakers? You're going to get a good sound card, but budget speakers? I would go with a good set of Boston Acoustics Ba4800. It a 4 speaker system, and it comes with a subwoofer. They are digital and crystal clear. They cost about $110, I think at bestBuy.com.
Also, everyone else is right. If you get the LCD, get a cleaper video card. No use in getting the Geforce3 when it won't look good on the monitor. i would just go with a traditional CRT monitor.
PS - Why are your parents worried about radiation? The monitor shouldn't hurt you unless you're taking it apart 😛