You have to tell us some info,
1. what's your previous keyboard/mouse/mousepad
2. Do you still looking for the same control feel or wanna try something new
3. What's your "must have" features on keyboard/mouse/mousepad
4. How many inches you turn 360° ingame
Break down like,
keyboard
backlit, tenkeyless, mechanical, which switch, big enter, macro keys, media keys, volume wheel, wrist rest included ...
mouse
buttons, wire/wireless, specific brand, grip style, color of lights ...
mousepad
metal, plastic, cloth, slippy, need more friction to control, size ...
Hope this can help