Thanks daspyda and junkout. I think we are going to go with the roll stuff, just don't want to slow down the workers, it is hot as hell here in SE Texas.
I spoke to a guy yesterday who restored his house which was built in 1926. He took the plaster walls down to studs.
Guess what? No insulation at all, and no sheathing. He said it was common construction technique in Florida back then, as his grandfather explained.