Hi James,
Good question.....To be honest it depends on the timeframe.
The higher it is the more i will go with just the cross, for instance on the daily i will invariably trust the cross (so long as the candle has officially ended still crossed) on a 5, 15 or a choppy 30min chart i will look for the confirmation signals to bolster my chances of a decent trade.
If you are just starting out using this sytem, i would wait for all the indicators to be where they are supposed to be, you may have fewer trades but the ones you do have are more likely to be successful......and thats the name of the game isnt it? :P
Made a killing on this system last week and have been having alot of fun with it this week too.
If this sort of movement happened once each month with regularity, i would give up my job tomorrow...........seriously
Good luck James