Well, I have a Razer BlackWidow keyboard (Mechanical, FTW) and a Logitech G9 mouse, I love this keyboard/mouse duo. I have an Acer S231HL and absolutely love its 2ms response, but I am sure you can get a better monitor. I also have a Samsung monitor (SyncMastern B2330), which is good.
Honestly though, I would recommend getting a new graphics card, if you don't have a top of a line one.
Do you mind posting specs of your PC?
EDIT: I see you're rocking my ᴇɴᴅᴜʀᴇ ʟɪғᴇ motto.