Good thing you remember to zero your weapons. Goes a long way from being annoyed at your weapon's presumed aperture, however, don't forget your wind is also a factor in for accuracy. But I'm pretty sure ya do so no matter.
I love the preparation you got here, but I got three competent buddies, one of them in the Marines to help with killing as many as possible within 24hrs. Sure, it might seem to be stupid at first, but keeping them busy and making them tired, next to possibly fighting a battle that'll be more than just a few minutes can really put a dent in morale. Remember, there was more than one battle of the somme and it can take longer than 5 months.