I like to monitor all pairs at all times but only trade 1 to 2 at a time. Used to trade many more, but increased focus allows me to be more profitable now. Multitasking does not exist in the real world, it's better to call it time slicing.
Quote from sheda:
Never been a fan of intraday more than one pair, things can move quite fast and you can find your self feeling overwhelmed. Intraday on one pair and 4-6 pairs on higher time frames, looking for 150 points per week with trades lasting days is doable most of the time.
Dont just spread your pairs spread your time frames.