Is she due at the beginning, or end, of August? If she is due near the beginning or middle, I would stop immediately, and begin pumping. It takes a little time for your supply to build, and you will want to build it before the baby comes. And yes, LactAids would be good. I think I have three. If you can afford them, get 4-6. At least, that's what others who have used them suggest. (I haven't brought our baby home yet, so I have no experience with the LactAid) If you can, get a minimum of two. They are good to have on hand if you need them, and this way, you don't have to immediately wash your only one when you are finished. You can try to have bags of formula, or breastmilk, in the fridge all ready, so when the baby is hungry, all you have to do is hook up the bag and you're good to go.
I will be praying you get picked. How exciting! Keep us posted!