It all depends on the signals you are waiting for. If you backtested your system and it works then I see no reason not to take the signal. The only reason for me not to enter a trade is when figures are economics news is imminent.
Somewhere along the way you said you were going to stop looking to short.
Today the DOW offered at least a dozen (on 1 or 2min chart) entries for 13535 cash or 13570 futures, which would've been excellent entries with close stops in case of a break.
Two of my longs were on that support level, my mistake today was that I missed the 3rd possibility while I was eating
because the 3rd would've been the best...