The Parabolic SAR is a trend following indicator, your best bet is to find pairs that have entered a trend. Yes it will give you a trend reversal signal, but that will always be a little late.

Idealy you want to look at a currency stregnth meter, find the weakest and the strongest trending currencies on a daily/weekly time frame, and trade the smaller time frames.

Try stay away from volatile pairs. For example, your EA would work well on USDCHF currently

Hope this helps.