Yeah, on days like today I would try for around 830.50, which would happen if that low to the left gets violated, but it's still in an uptrend, so the new local low would reject and then up again. I tend to place the orders then watch the action as it gets close. Sometimes I'll take a small position that isn't the best entry if I think it has reversed, ie smaller my size when I don't get what I want.
IOW, if it isn't doing what I think is "normal" I only really want the very best entries, or I try to bank my money early and then refuse to give any back. Good luck again! The dog's getting crazy so gotta go walk.