I think that's a bit over the top Kat, I think you're going to give yourself analysis paralysis.
Isolate, and remove the less popular markets, which are usually a bit more noisy and harder to trade.
I watch all the majors, and their crosses. Gold Silver Crude, and some of the popular Indecies.
Most of the pairs your watching will have high correlation, so a signal on the popular markets is going to appear on the less popular markets also.