Peripherals: razer? Steel series? Monitors?

So I'm looking into getting. New keyboard, mouse, and Headset. I also want to possibly buy a monitor although I may just stick with using my 1080p tv. For keyboard I was looking at a razer black widow, a naga mouse (gonna try to get into swtor, but otherwise I tend to play fps games and strategy), and possibly a steelseriesv2 headset. Sould I pony up for the megalodon headset from razer? Does anyone own these and can comment? Or can suggest superior alternatives? Also, if I was to look at good sub 200 dollar 23 inch monitors what would be the best pick up now adays. Thanks!