There are some other Edges that could be included.
1. Cost retracement. Just to make sure that we are not entering when option prices are heated up. In due course, we will have a decent reading for the level of retracement for each week. For ex. Last week showed a high of 212 low of 185; Therefore this week, as soon as i get a 170 I am willing to enter. After this cooling off, we expect a 100 point move. This nullifies the earlier intention of blindly entering on Monday morning, since it covers the idea of cost retracement better.
2. After, entry a suitable intraday moving average could be used to determine intraday end of trend. This will prove crucial to maximize profits esp when a leg becomes ITM.