have you looked at previous days results and how it stood up,should be easy to check
Yes, visual check only, looks like a consistently positive win ratio. It's capable of being adapted so that you get out with a regular, if unambitious, profit - this could be a percentage-based target or derived from the 8-10am range. Or you can go for the asymmetrical approach by running the winner through the day and subsequent night period.
To be honest, my head hurts from so much backtesting this last few days on this and other strategies (I am on holiday from work), but this is a tried and tested methodology so i'm going to fly it from tomorrow.