Thank you OverRun, for reasking my post! I know I am taking a risk, but really with baby chicks and eggs, all of it is a risk. I have decided to leave the girls where they are. The other chickens are laying in a different nest, and my two broody are as tight as ticks on their nests. 
It is warm in the house, but it does not seem to be bothering them, we are not having a hot summer, actually more cool. I did go down and offer water to them, one drank a bit, and the other a bit more. I do go down about 4 x's a day, and I have never caught them moving or getting off the nest. But they have to be getting off there once in a while, right?
I have thought about letting the others out to free range, shutting the run, and then physically removing the broody hens, so that they do get a dustbath and some food and water, but part of me is telling me that they are getting off, and taking care of their needs, and they know more about being a hen than I do, cause I really think I just want to sneak a peak at those eggs.
Day 6- how will I wait?  At day 10, at night, I think I will go down and candle them.
Thanks for your support. mrsK