OK, just mixed some fresh nutes and gave the girls a drink. Up until now, or at least more recently, I've been premixing the nutes for a couple of days in order to stabilize the pH.
BRF's understanding is that the pH range of the AN mix might rise but the formulation/chelation of the nutes allows them to uptake outside of the traditional pH of a hydro type grow.
So I'm going to take BRF's approach because this would be the easiest way for me to do things if it works. I did not even measure the pH...and that's a first for me since I'm so anal about it. I mean, I'm seeing some of the 'lazy' aspects of Hempy and this would be the laziest way for me. So for now, I'm going to try taking the 'What, Me Worry?' approach...and will be changing my avatar to reflect my new found, free swinging grow style! Unless it doesn't work, of course.